I've never concerned myself with turbos in any way. However, since I've been watching your channel I've learned more about them. Of all the guys that I follow, you're probably the most experienced and knowledgeable turbo tech. Thanks for taking the time to share this!
Oh you're in for a disappointment... I'm at the bottom of the turbo knowledge spectrum. I will however make a follow-up video to this one... explaining a little more how that little diverter valve works / does its job and why.
I got curious and was getting ready to do some diverter valve research. Diverter valve = blow off valve maybe. Now I'll wait for your follow up video. Thanks!
I was thinking about how if one of those bolts stripped or broke, what a nightmare that would be. And when you mentioned about them having locktite on them, I said to myself, there wouldn't be any going back in; just some anti-seize. And that's what you mentioned. We think alike :) Good video Thomas!
Thank you for the video very informative I am a first time Volkswagen owner I have a 10 Passat And I have the 299 code so I’m going to replace the diverter valve and the wastegate solenoid I usually buy Toyotas and Hondas but I got a killer deal on this car thank you again
If you hear high pitch rattle when you shut the engine off... then the wastegate "flapper" is loose / does not have enough tension. Watch my friend's 2 part video: ua-cam.com/video/kRHmjAD3JHc/v-deo.html and ua-cam.com/video/SNPmjrPbBNQ/v-deo.html
Volvo's probably have a different "common" issue for P0299. My channel is for VW's & Audi's. This guy is a Volvo technician. Leave a comment under his video and you'll get better info on what the problem might be. ua-cam.com/video/xBCHSAwHf7w/v-deo.html
Hi Thomas. I’ve got a Skoda fabia 1.6tdi 2010. P0299 turbo under boost. I’ve changed n75 map sensor put a new turbo on it and still getting this code. Car is fine to drive. Just when I get to 70mph it comes on or if I go up a hill and need to accelerate hard
If the turbo vanes are vacuum controlled, you need to check how much vacuum the actuator pod is receiving. Should be 17" to 21" Hg of vacuum. The vane lever should come to rest at the stop screw by 17" Hg of vacuum. If the actuator rod does not move when vacuum is applied, the the vanes in the turbo are stuck or the actuator is bad. I would have to check a service manual to see how your 2010 1.6TDI turbo vanes are controlled (I suspect via vacuum, but can't be sure since we do not have that engine in Canada).
What's your most encountered problem on the Chevy 1.4L turbochargers? Currently have the p0299 Underboost code myself, and I certainly don't want to replace the entire thing if possible ($$$). I'll probably never buy a Chevy again after this and the PCV system issues (engine cover replaced twice!).
2013 gti, replaced pcv valve, replaced dv, added dv+, replaced plugs, have r8 coils, noticed oil in pcv hoses but apparently its normal... at a loss of where to go next. dont think turbo is bad because car doesn't go into limp mode and I dont notice any loss of power. if it wa the turbo id be surprised since I only have 60k miles and the car isn't modified. if I clear the code the Code comes back between 2500-3500 rpm under acceleration at highway speeds.
Make sure that all intake hoses / connections are tight after the turbo up to the throttle body. The wastegate / flapper itself could be bad / loose. Wear in the linkage can cause the valve to not seat fully... under light boost, boost is able to escape / get past easier than under higher boost levels.
I know this is an old video, but I am thinking this is my problem.... No check engine light, but would a bad diverter valve make a sound like someone letting out air of a balloon? high squeel noise? seems to be coming from under dash by windshield ( 2001 vw 1.8t APH motor ) squeals when I really step on acceleration, stops when I back off pedal... normal driving no squeal.
Not sure... I would have to hear it. Your diverted is of a different design and at a different location. Bad diverted valves usually cause turbo flutter sound when coming off of boost. If you are hearing something while under boost... look for a boost leak and inspect the turbo for excessive shaft play.
If the diverter valve isnt working correctly would that cause oil to push out of all the injector seals? Both sides of my valve cover has oil sitting in the areas around injectors, as well as p0299 code, plus i could hear what i assumed was a turbo leak under acceleration
Year, make, model, engine? I assume direct injected? Boost is measured in front of the cylinders... meaning, if you have oil at the injector seals, the oil is coming from within the cylinder / being pushed out during compression or power stroke (valves are closed). So the "leak" is not measured / affecting boost (in my mind). Check the intake hoses from the turbo to the engine... look for wetness / oil around clamps / fittings or hoses themselves. If you can't find a leak, have someone attach a "boost leak test kit" to the intake system. Air is forced in at one end and the other end of the intake is plugged off. You can then listen for leaks and follow the noise to the leak.
Hi Thomas, I have a 2006 1.9tdi Golf that that the computer gave me this same code. when i'm driving along the car is shaking like I'm playing with the accelerator, it wants to cut off. Any ideas you may give me from your expertise would be greately appreciated. I will check for this same issue first. Great video, thanks
Your engine will not have the same valve. Follow the steps in the following video starting the 3min mark: ua-cam.com/video/b0WPeWfWUrc/v-deo.htmlm59s Let me know if you have a) vacuum at the vacuum hose when the engine is at idle and b) if the turbo actuator rod moves when the engine is started (have someone start the engine while you look at the actuator rod).
Hey Thomas, got a 1.6tdi vw polo and recently its been going into limp mode after 10mins of driving, after the diesel engine management lamp starts to flash. Found out its got the P0299 code. Taken it garage and they've advised i need a new turbo which is 700+ excluding labour! Any recommendations thomas ? Would really appreciate it. Cars done 120k if that helps
I don't know how they tested / checked the turbo... if it is a service garage that is familiar with VW's / TDI's, then I would assume that they know what they are doing. You are better off getting a second opinion from a another service garage, then what I would be able to "guess / suggest", since I can't see, hear, drive the car from where I am. =)
Doesn't matter what car... if the engine doesn't have a diverter valve, then the video doesn't apply. Diverter valves can be turbo mounted or remote mounted... but fail in a similar way. So you see... it doesn't matter what car I'm working on. As the owner of a turbo vehicle... you just need to know if your engine has a diverter valve or not and where it is. If I limit my video to a specific car brand or engine, less people would benefit from it.
It's not easy recreating sounds (boost leaks) when the vehicle is stationary. Luckily, TDI air leaks will usually result in oil stains around the leaking area... have a look at all the charge pipes from the turbo to the intake. Focus on the areas that have an oily film / look moist. Cracked hose, plastic charge pipe / intercooler etc.
Diesels do not use / have diverter valves (as far as I know). Check correct movement of the turbo actuator rod. I'd have to check if it is a mechanical linkage or electronically controlled. Let me know if you have issues determining... and I will look it up.
@@EXOVCDS Hello and thank you for your video and email reply to possible faults. I haven't yet started to work on. What I can say is, 1 - my scan tool has a fault code turbocharger underboosting. I can clear the code end the engine light goes off. The vehicle sometime afterwards when it loses it's power the engine light will come back on. 2 - if I turn the ignition off, then turn the ignition back on, the caddy immediately drives with boost and and power. What is your thoughts ? Thank you very much kind regards Ben
Hi, I have the same problem with my mondeo mk5 2l ecoboost petrol, is this the same one as you are working on. If so where did you get the valve from. I have been told to replace the complete turbo.
This is a VW / Audi turbo... I don't know if Ford uses the same turbo. If someone already looked at your turbo and concluded that you need a turbo... then it's most likely a turbo that you need.
Do you remember the year, make and model of this car you worked on in this video? I own a 2007 Audi A4 2.0 Turbo and I'm having a very hard time breaking the top nuts loose due to the location. I'm thinking about removing the oil line (connected to the engine) for better access to the diverter valve. Do you think this is a good idea? Any idea of the torx bits size to these oil line nuts?
This was a 2006> VW... the engine & transmission sit transverse. Your Audi is a longitudinal mounted. You should not have to move oil lines to get at the diverter. Here's a video of the same setup as in your car: ua-cam.com/video/zYbO4toEcDw/v-deo.html at 1:49 the diverter is visible. At 1:56 you can see the mounting bolts and the "teeth" marks left on the bolt heads from a "bolt extractor socket". My allen wrench / hex bit would not break the bolts loose, but the extractor socket bit into the bolt head and broke it free. Common extractor socket set: www.amazon.com/Topec-Impact-Remover-Pieces-Extractor/dp/B07MX8B6XX/
I have a 2013 GTI with under 60,000 miles, I threw the P0299 code the care seems fine, not in limp mode, and doesn't feel underpowered. The car is completely stock other than a resonator delete from ECS tuning. Any advice on what to check first would be greatly appreciated.
You need to do some data logging / scan tool data viewing, to determine when / at what rpm & load boost is less than specified. Any time that actual boost is less than specified for 6 seconds or more... p0299 will set. P0299 is more likely to get flagged at moderate / mild boost conditions (leisurely driving), opposed to high boost conditions (spirited driving).
Hey Thomas! I have the same code was wondering if you’d be able to help me out a bit? Amazing video btw! Appreciate your work . I have a 2010 VW CC Passat 2.0 Tsi 92,300 Miles the same P0299 code just came on recently
If the code comes back during regular driving... but stays away if you drive more aggressively, then the problem is a loose wastegate flapper in the turbo. If you year a high pitch rattle every time the engine is shut off... that's the flapper moving (should have a tight fit / not wiggle). Turbo replacement to fix.
@@EXOVCDS Thank you for replying back! I appreciate your time & pardon me for the long response’ I just want to explain a bit more , The engine light came on during driving & hasn’t turned off since, so I took it to get the OBD2 reader & its telling me to replace TurboCharger Recirculation Valve. This was my worry because a month ago I got an oil change & I was told my axle is leaking grease from the boot, & it was a great amount of grease. Is it possible that since I have not replaced that axle or repaired it, may the grease have entered my turbo recirculation valve? & cause it to have low boost? Which would explain the low increase in acceleration when regular driving , I noticed it doesn’t reach the acceleration it normally does ever since the light turned on. I wanted to remove the diverter valve myself to see if maybe its damaged ? or just contaminated but i’m not too sure..
@@alexpacheco3259 if the valve is bad, it will also affect aggressive driving. Axle grease can not damage the valve. If you think the valve is bad... check it.
I have a 2010 Passat, also the 2.0t FSI with the same diverter valve. I do get the P0299 about once every 1 or 2 months. Aside from that I also have a cold start misfire (Intermittant on all cylinders but worse when cold) but the dealer that I bought it from said that the valves do not look bad at all when looking at them from a boroscope. Would there be any chance at all that a bad diverter valve could cause a cold start misfire, or the possibility that the misfires could cause the P0299 code to show up? Any thoughts would be great! Sorry for the long question!
Cold start misfires on direct injected engines are usually due to carbon deposits / buildup. Cold start misfires shouldn't set p0299, since the engine is not under boost. Check that the PCV system is up to date (most current PCV breather is installed), check for any excessive wastegate rod movement that could indicate that the wastegate / flapper valve is not closing fully.
@@EXOVCDS Yeah we did replace the PCV valve with the latest vw model at least, have not yet replaced the diverted valve. I plan to have the valves done in the next month or two at least was just hoping maybe the diverted valve was the problem. Thank you for the info!
If cold start misfires still occur with new diverter (but solves p0299)... try some induction system cleaning via a vacuum hose at idle & 2500 rpm... using straight water or a chemical cleaner such as Seafoam or BG Air Intake System Cleaner. Use caution when sucking liquids in to the intake manifold via a vacuum hose!!!
@@EXOVCDS We did try a can of the CRC valve cleaner, we did it through the air intake via the access near the air filter, and sprayed it past the Mass air flow sensor, but most of it was probably missed because it may not have gotten past the intake manifold flap. Did seem to slightly make a difference but then again outdoor temperature seems to be just as effective. Meaning when it gets warmer out it seems to have less of a misfire.
I remove the intake temp sensor (leave the plug connected so that the ECM still receives a temperature signal) and insert a tapered rubber vacuum cone fitting that is attached to a small diameter vacuum hose. I then start the engine and slowly feed the vacuum hose into the liquid (water or other) until the engine starts to run rough. Continue to dip & remove the hose from the liquid so that the engine does not stall at idle... if you get someone to hold the rpm higher, you can leave the hose submerged longer (but be careful!!!!). Listen to the engine & look at the exhaust... stop if anything doesn't sound or feel right. Shut the engine off after and allow the liquid (that has so far been ingested) to soak into the carbon. Start the engine and do the same liquid ingestion again. After installing the temperature sensor... take the car for a run at various rpm ranges. Check how she starts cold the next day. A borescope through the intake temperature sensor hole is how I check most of the valves.
Would this cause the car to hard/slip shift? When going from 2nd to 3rd gear the rpm rev up and there a jolt when it shifts. Only hard shifts that one time as it shifts fine after that hard shift.
No. Most likely a transmission issue (solenoid in the valve body or something else in the valve body). Year, make, model, engine, 4, 5, 6 speed automatic transmission?
@@EXOVCDS hi iv got a bmw 1 series 116d, code p0299, underboost, only seems to happy mainly in higher gear when put foot down a little, then something like a min later turbos kick in then all is good on the world, any idea ?
@@natalieannlaird If there are no "boost leaks", you'll have to check / confirm correct wastegate operation & control by the ECM. If the wastegate is not closing fully (due to wear / excessive freeplay), boost will go past it, which results in lower power. If the ECM can not control the wastegate due to a faulty vacuum actuator or broken vacuum hose (I assume that is how the ECM controls it... I'm not familiar with BMW's), then that can also cause power issues. Start with a visual inspection and then you'd have to use a vacuum gauge to "T" into the wastegate control hose (if there is one) so you can see if vacuum control is present when driving. A good scan tool should allow you to activate the vacuum solenoid, to verify ECM control.
How do you know that you need a new diverter valve? Does your turbo even have one? There are many reasons for P0299... VW & Audi have diverter issues. I don't know the common problem Ford has.
My Audi just had a couple of p0229 codes in past few days. I guess that is the same problem you just fixed in the video. Can I have the address of your car garage?
@@EXOVCDS Thanks for you reply. I don't have the equipment and knowledge to check. Is it OK for you to check the car at your workplace? Much appreciated.
I'm in BC... I don't advertise for my boss. I can't guarantee that I would work on it, or find the problem. I'd like to keep youtube & work separate. I would not want one of my viewers to end up disappointed with the service received.
When I unplugged my connector I got a bunch of oil that came out of it but it isn't even torn and I have a p2099 turbocharger underboost cel do you think that I should change it and do u think it will fix my cel?
So I replaced my DV, since my Indy shop recommended for me to hangs due to this under post code. Went for a drive and the CEL came back on, then they recommended to change the boost pressure sensor. Does that seems right?
Hi Thomas i have a vow caddy 2009 I can feel there is no kick when I drive and the fault code p0299 is present. The van still drives though. Is it a case of the turbo has packed up al together or could there be a simple solution. Thanks a lot for any help or advice.
First off thanks for you response. I don’t have any black smoke but have tried using a turbo cleaner or 2 and it seemed to come back a bit but had loss of power again. Im going to see if I can follow the vid link you sent. I’m not a mechanic but am practical and will let you know how I get on thanks so much.
Hi thomas, i have the error p0299 on a passat b6 2.0 tdi 2007 engine code bkp, i have cheked the turbo, intercooler, vacuum pipes, solenoid, turbo actuator and nothing changed, in the 3 rd gear i got the limp mode, the acceleration is dead ... what do u think i should check? Is possible be the catalysis? Is the last thing i think would be the cause. Thank s very much.
I don't know how you checked all those items... if the catalytic converter were bad, you would have no power all the time. I don't know what else to check.
Hello my english is not so good.I have mitsubishi lancer did 2.0 with 2 faults code P0299 and P2563.First fault code is always present second only when i push gas more than 3500 rpm.Can you help my with some advice please i was in some service and mechanic say turbo or turbolader sensor or actuator or dpf stuffy nobody is sure.Thank you
Check your turbo actuator to see if it has an electrical plug on the side of it. Like this: images-na.ssl-images-amazon.com/images/I/61pNltS2OBL._SL1002_.jpg Black plug at the end... if there is an electrical problem with the wiring (corrosion, broken wires, bad connection etc), then that could be setting P2563. P0299 usually is set when turbo boost is lower than it should be. If there are no boost leaks and the turbo actuator moves correctly, then the turbo might be bad. I can not see or test your turbo from where I am, so I can't really help, sorry.
2013 vw tiguan 2.0 tsi CCTA Got code p0299. Thats the only code. There is no movement/play on wastegate rod, dv is good,new pcv, map is reading properly, I unplugged the n75 and no changes,also unplugged vacuum line to wastegate, the car feels N/A. Vcds shows a peak of 1500mbar. 1,000mbar is normal atmospheric pressure. No boost leaks. Any ideas? There is no turbo shaft play and wastegate valve looks good.
The internet is great for finding information and then taking it to your mechanic! I can only image what it is like back east with all the rusty bolts!
In eastern Canada, they get a lot more snow than we do on the west coast. More salt on the roads as well... which turns vehicles into rust buckets. I sometimes have to work on a rusty vehicle... it's not fun. =(
Depends on what the problem is. It can still have boost, but not the correct amount... or it might have no boost at all. Using a scan tool to view boost pressure, listening for boost leaks during a test drive, physically checking the wastegate actually linkage for excessive freeplay etc., should help determine where the problem is.
A loose wastegate flapper can trigger P0299 under light load conditions... boost will feel fine when accelerating, but boost can be "lower than specified" when driving at moderate / light boost levels. Both the diverter & wastegate flapper are somewhat easy to check.
Watch the following video (starting at 1:55)... you can see the wastegate operating rod to the left of the loose flapper valve). Locate that rod in your engine bay (from under the car) and wiggle the rod. If you hear a metallic rattle... that's the loose flapper valve. ua-cam.com/video/eACH26jr-SE/v-deo.html
i have a 06 jetta tdi that has only a P0299 code and it's making a louder noise than usual also it's blowing smoke out the exhaust... could it be the diverter valve failing?
Different turbo design on yours... probably the turbo actuator is no good (broken diaphragm) or the vacuum supply to it. Watch this... do some testing and get back to me. ua-cam.com/video/b0WPeWfWUrc/v-deo.html
I turn the camera off when I run into issues... no-one needs to see my struggles. I'm sure it could be helpful to some, but recording while the pressure is high isn't helping the repair. =(
My p0299 code just popped up. The guy i bought it from replaced the turbo a few years back. The car currently has 120k. Would it most likely be the Dv or should i check the waste gate for play first ? Please please respond
Thomas EXOVCDS so just check them both at the same time gotcha. I dont know if the previous owner ever replaced the dv so i went and bought the updated one with the piston just to play it safe
I just bought a 09 tiguan.i dont have any codes coming up but i wanted to find out and upgrade to the newer style dv if i dont have it.im abit confused cause i want to get the gfb dv+ but its only the top half of the dc that it replaces so do i need to buy a revision dv and the gfb dv.i wanted a forge spacer too as i like the blow off valve sound
Contact the seller... it might be designed to fit the old & the new style, since from the look of things, the only thing that is different between the two DV's is the plunger part.
Hey Thomas! I have VW Passat B6 1.9TDI 2008. Same code problem in VCDS. Driving around 100-130 km/h cause 'engine failure' on a dashboard with 'check engine light' and blinking 'diesel engine pre-glow'. Most important, after thar car has no power, no boost until i restart the car. What possibly could make these problems? Thanks for any help! Sorry for my english.
If power is ok until high speeds / loads are reached, then I think the ECM is reducing power to protect the engine from too much power / boost. Check that the turbo vane actuator pod is working correctly and that the vanes are not stuck. Usually, "not enough boost" will not result in "limp mode"... but overboost will. The actuator pod should receive at least 17"Hg of vacuum and the vane lever should come to rest at the stop screw with 17"Hg of vacuum applied.
@@EXOVCDS thanks for response, ill check it soon with my mechanic and ill let You know! Maybe i specified problem incorrectly and circumstances of it. Yes, it happens when im driving around 100-130 but problem in my opinion has connection with engine speed(rpms), but u already know, i guess (it always happens on 5th gear). When i drive 'economcly' and switch gears when engine reaches 2000 rpm, so when it comes to switch to 5th gear and drive on it for some couple of minutes in around 2k-3k rpm, 100-130km/h, problem happens. BUT i can avoid the problem by driving dynamicly and fast. When it comes to switch from 4th to 5th gear, i do it above 4k rpm and then i drive on high rpms and above 130km/h. And then everything is OK. Of course until i go down to lower rpms on 5th gear and problem starts. But i cant drive like that all the time on our beatiful polish roads lol
Maybe the problem is caused by injection system (or whatever is called in english)? Or second option might be a problem with turbo intel pipes? Like they may be leaking or sth?
P0299 = the ECM is not able to control boost (boost too high or low). You need to use a scan tool to monitor Boost pressure & MAF sensor information... to determine if boost higher or lower than what it should be. Some information about P0299: You need to use a scan tool to monitor Boost pressure & MAF sensor information. (Bottom of page click on picture) a problem with that vacuum reservoir, can cause less vacuum to get to the turbo actuator.
If you are hearing air escaping (boost leak), it's probably not due to a diverter issue. Look for signs of an air leak, by checking all the rubber air hoses between the turbo & the throttle body (loose clamps or torn hose). Look at the intercooler through the front bumper grill... the plastic trim around the cooler can dig into the cooler and cut a hole over time.
Mr. TOMAS... engineer good morning I need your help I have a wv amarok and emit large amounts of black smoke through the exhaust oil is contaminated with gasoline. There is no dtc in the rail the pressure at idle is 38bar, not exceeding 40 bar at idle, the injection pulse is 2.5. Some idea to follow in the diagnosis thousand thanks for time God bless you.
P0299 is a generic code that applies to all turbo engines... the location of a "diverter valve" might be different on different engines, but the checking / verification of its operation is the same. Since this is a VW / Audi channel... 2.0T, specifically it was an EOS. It would be more helpful if you said: **I have a "insert make of car" with a "insert engine" and this trouble code "insert fault code".... does my car have the same diverter or should I be looking somewhere else. Thank you for taking the time to answer my question!**
@@EXOVCDS I have a Volvo c70 2.0d 2008 which has the same 2.0hdi 136bhp D4204T engine which is made by Peugeot. It doesnt have any boost keaks or fault codes. It is very sluggish and only gives 29mpg average. But if I switch off the engine and disconnect the electronic egr valve, the mpg and power improves massively. I then get 60mpg. But if I switch the car off and on again (with the egr still disconnected), I'm back to no power, 29mpg, and a load of fault codes including P0299. If I reconnect the egr valve, all the fault codes go away, but im back to only getting 29mpg. Any ideas? Thanks
@@EXOVCDS Thanks for your reply. Strangely my car has been giving a relatively good 50mpg and good power since I reconnected the egr electrical cable. But I know it's only a matter of time before I will randomly get power loss and poor mpg of about 29mpg again...
There are many reasons for p0299.... the diverter is just a common part. Check all your air hose connections from the turbo outlet to the throttle body. A bad PCV can cause low boost... the electric valve that controls the wastegate could be bad. Too much play in the wastegate (of the flapper valve) could be the cause (engine off, grab the wastegate rod and wiggle it).
Could be turbo, could be valve, could be PCV, could be air / boost leak... you need to check one thing after the other until you find the problem. Year, make, model, engine? Remove the valve and have a look.
Hi Thomas, appreciate your videos, so very helpful, I am having an issue with a polo 2010 1.6 CR tdi 75 bhp, p0299 error, I brought the car at auction and it had a blocked dpf that I forced regened, also it had a faulty egr that was replaced with used part, the garage gave me back the car and I drive up the road and got the coil light on and limp mode, vcds gave me the above code , I took back to garage and he thinks it maybe the turbo actuator, so I have ordered one from eBay, my question is do you know if my engine has one of these common diverter that we should also check ? the exhaust also had a blow and the garage welded near where egr was , my exact reading with vcds is - p0299 (237) - control range not reached ,, any advise as to where to check would be ideal, my mechanic is not completely up to date with VAG cars, so be able to point him in right direction would be helpful, thanks very much , love your work from the UK
Thank you for the kind words and thank you for watching! The TDI Turbo is quite different & functions different than the one in this video. P0299 is usually set when boost is not where it should be... mainly when the engine is underboosting. However, I think the same code can set if the ECM can not keep boost from getting too high. This would explain why you have limp mode... the ECM is protecting the system from overboosting. On vehicles where boost is not enough, the ECM does not have to worry about engine damage, so it does not enter limp mode. Monitoring boost with VCDS to see what happens would be a good first step. If boost is consistently higher than it should be, disconnect the vacuum hose from the turbo actuator pod and see if the same thing happens.
Thank you very much for such a swift reply!,, you are a world of knowledge on VAG cars!, I already received the new actuator today and guy will fit it asap, if the car still have problem after that I think we will be stuck as to where to look next,, its been one fix after another with this polo! I will have to figure out where boost monitoring is on the vcds as I not to familiar with that setting yet, many thanks again for your swift reply, all the best @@EXOVCDS
Just to update you here, my fault was because of the turbo actuator, part cost £60 - $85 and man fitted it today, car is running great with full power now! , great stuff mr @@EXOVCDS
I have a problem with the code p2096 in bmw 535i xdrive twinnturbo change the coverage of valves, pcv new chargepipe, sparkplugs new. Help with this code please
I'm not familiar with that engine... straight 6 cylinder? I'm not sure if "P2096 bank 1" refers to cylinders 1 to 3 or if cylinders 1 to 6 are all bank 1. If bank 1 only refers to cylinders 1, 2 and 3, then you have to look for something that is causing those cylinders to run lean (too much air or not enough fuel). This could be due to a faulty fuel injector that is not spraying enough fuel... using a scan tool, you can look at cylinder idle contribution (differences in power). If bank 1 refers to all cylinders, then look for something that is affecting the entire system (could also still be a fuel injector issue).
i have a audi 2006 a4 quatto 2.0 code po299 runs good but turbo slow to kick in uses oil and also bad gas milage not a mechanic but been told different things also on my cheap reader it has 7e8 and 7e9 got no inea what that is could you help old man on fixed income don't want to just keep guessing
Not sure what 7e8 & 7e9 mean... P0299 is often due to a bad diverter valve (as in this video, the "old style" valve). If the diverter is OK or if it is of the new style, then it could be that the turbo itself is bad (wastegate loose). Oil useage could be turbo related or PCV related.
@@EXOVCDS I have a 2014 VW Tiguan 1.4TSi. The dealership said the N249 Valve is faulty and they would need to replace the whole Turbo for that? Does that sound accurate?
@@EXOVCDS I ran over a stupid cone at night and bge had a line of cones across the road over a blind hill with no warning signs. So the cone got up and smacked something near my turbo. I replaced the dv removed the spacer cause the scanner at AutoZone threw a turbo recirculation valve code. The diaphram was broken in the old dv anyway so idk I thought that would fix it. Nope. What else could the cone have hit that would have caused my car to all of the sudden act like this? Or did the flap inside the turbo just happen to fail because the car has 145k? I looked under my car and all of the lines coming off the turbo look like they are in tact and tight.
MakeLifeFun The ones that I have are no longer sold by the company that I bought them from. These are the closest that I have found to mine: ivuecamera.com/products/1080p-hd-camera-glasses?Thomas%20EXOVCDS%20(UA-cam%20Channel)&Link%20In%20Video%20Description&Thomas%20EXOVCDS%20(UA-cam%20Channel)
I got mine off Amazon. Just set up your garage for Amazon then filter results and it will only show parts for that vehicle. Read the questions asked also.
Im also having P0299 code. I already replaced myair filter, SCV and actuator. Cleaned my EGR, intake manifold and fuel filter. What else should i check?
I don't know anything specific about Kia's... sorry. If it has a diverter / bypass valve like the turbo in my video, check that. Could also be a loose hose clamp / fitting anywhere between the turbo outlet and the throttle body. Worst case, it is a problem with the turbo.
Check for boost leaks... check operation of turbo actuator rod operation. Let me know what you find... post videos of turbo rod activation on your channel so that I can see.
OK, let me know when you have uploaded a video. This video might help... if you have a vacuum gauge, you can check the system. ua-cam.com/video/cj63_qkX6Hk/v-deo.html
wiki.ross-tech.com/wiki/index.php/17705/P1297/004759 Bottom of article talks about a bleeder valve (check valve)... here's a video of a failed valve. At 1:50 of video you can see the valve. Find it on your engine and check it.
@@EXOVCDS for the breather valve i have that T section but mine goes directly in it and it goes directly in the intake manifold vhen i check for faults i have this two only Boost presure control and this pressure drop The second one started to show when i replaced the ruber pipes that goes on intercooler and to the intake manifold
@@mirkokolar1488 how does it idle? If idle is rough, pinch the pcv check valve hose at the intake manifold to see if idle gets better. The diverter valve can stick open causing lack of power. Best way to check for pressure drop / boost leaks, is to pressurize the intake duct from after the turbo to the throttle body.... then spray some soapy water to look for leaks (if you can't hear any leaks). Usually, leaks that you can't hear... won't set codes.
@@EXOVCDS i am going for diverter valve today to check it first then all other things it idels god only thing i have after driving for 4 hours and stop after 4 min. Gets rough idlle pres the gas padle and let go it is fine for another 2 min then again after stop for and half hour everthing is fine then
@@johnsimon911 On VW & Audi engines it mainly from the PCV system... worst case it is from the turbo. PCV fumes from the valve cover are vented into the turbo inlet and are then forced through the intake plumbing to the intake manifold.
@@EXOVCDS Hey Thomas! I have the same code was wondering if you’d be able to help me out a bit? Amazing video btw! Appreciate your work . I have a 2010 VW CC Passat 2.0 Tsi 92,300 Miles the same P0299 code just came on recently
@Alex If the code comes back during regular driving... but stays away if you drive more aggressively, then the problem is a loose wastegate flapper in the turbo. If you year a high pitch rattle every time the engine is shut off... that's the flapper moving (should have a tight fit / not wiggle). Turbo replacement to fix.
I've never concerned myself with turbos in any way. However, since I've been watching your channel I've learned more about them. Of all the guys that I follow, you're probably the most experienced and knowledgeable turbo tech. Thanks for taking the time to share this!
Oh you're in for a disappointment... I'm at the bottom of the turbo knowledge spectrum. I will however make a follow-up video to this one... explaining a little more how that little diverter valve works / does its job and why.
I got curious and was getting ready to do some diverter valve research. Diverter valve = blow off valve maybe. Now I'll wait for your follow up video. Thanks!
Yes... that's pretty much what it is. Instead of venting to the atmosphere (Pfsss sound) it directs the air back into the turbo intake.
I was thinking about how if one of those bolts stripped or broke, what a nightmare that would be. And when you mentioned about them having locktite on them, I said to myself, there wouldn't be any going back in; just some anti-seize. And that's what you mentioned. We think alike :) Good video Thomas!
Thanks....this helped me figure out where the oil leak was coming from
Thank you for watching!
Thank you for the video very informative I am a first time Volkswagen owner I have a 10 Passat And I have the 299 code so I’m going to replace the diverter valve and the wastegate solenoid I usually buy Toyotas and Hondas but I got a killer deal on this car thank you again
If you hear high pitch rattle when you shut the engine off... then the wastegate "flapper" is loose / does not have enough tension. Watch my friend's 2 part video:
ua-cam.com/video/kRHmjAD3JHc/v-deo.html
and
ua-cam.com/video/SNPmjrPbBNQ/v-deo.html
00
Thank you for the video. It sure is very educational and helpful for many. I’m a freshman in hs and studying to be an engineer.
Thank you for watching!
Very good video, the only problem I have is finding the part , could you send me a link for the part ? thanks brother. the car is a Volvo XC90 right ?
Volvo's probably have a different "common" issue for P0299. My channel is for VW's & Audi's.
This guy is a Volvo technician. Leave a comment under his video and you'll get better info on what the problem might be.
ua-cam.com/video/xBCHSAwHf7w/v-deo.html
Hi Thomas. I’ve got a Skoda fabia 1.6tdi 2010. P0299 turbo under boost. I’ve changed n75 map sensor put a new turbo on it and still getting this code. Car is fine to drive. Just when I get to 70mph it comes on or if I go up a hill and need to accelerate hard
If the turbo vanes are vacuum controlled, you need to check how much vacuum the actuator pod is receiving. Should be 17" to 21" Hg of vacuum. The vane lever should come to rest at the stop screw by 17" Hg of vacuum. If the actuator rod does not move when vacuum is applied, the the vanes in the turbo are stuck or the actuator is bad. I would have to check a service manual to see how your 2010 1.6TDI turbo vanes are controlled (I suspect via vacuum, but can't be sure since we do not have that engine in Canada).
What's your most encountered problem on the Chevy 1.4L turbochargers? Currently have the p0299 Underboost code myself, and I certainly don't want to replace the entire thing if possible ($$$). I'll probably never buy a Chevy again after this and the PCV system issues (engine cover replaced twice!).
Never worked on one... I work on VW's & Audi's. Having said that, check for boost / air leaks & correct wastegate operation.
@@EXOVCDS Roger wilco.
Another answer for me to fix a car. Thanks!
If the diverter valve is OK... check the turbo wastegate rod / flapper for excessive free play / movement.
@@EXOVCDS It was the diverter. Car was VW EOS.
@@brettcorneliusen6277 thank you for the update!
Im gunna check mine tomorrow..thanks for the info...
Wastegate rattle / excess movement would be the next thing to check.
Oh man I love that stuff you have to do by feel but sometimes it is the only option.
That's what she said!
; )#
Great video Thomas!!
Thank buddy!
2013 gti, replaced pcv valve, replaced dv, added dv+, replaced plugs, have r8 coils, noticed oil in pcv hoses but apparently its normal... at a loss of where to go next. dont think turbo is bad because car doesn't go into limp mode and I dont notice any loss of power. if it wa the turbo id be surprised since I only have 60k miles and the car isn't modified. if I clear the code the Code comes back between 2500-3500 rpm under acceleration at highway speeds.
Make sure that all intake hoses / connections are tight after the turbo up to the throttle body. The wastegate / flapper itself could be bad / loose. Wear in the linkage can cause the valve to not seat fully... under light boost, boost is able to escape / get past easier than under higher boost levels.
I know this is an old video, but I am thinking this is my problem.... No check engine light, but would a bad diverter valve make a sound like someone letting out air of a balloon? high squeel noise? seems to be coming from under dash by windshield ( 2001 vw 1.8t APH motor ) squeals when I really step on acceleration, stops when I back off pedal... normal driving no squeal.
Not sure... I would have to hear it. Your diverted is of a different design and at a different location. Bad diverted valves usually cause turbo flutter sound when coming off of boost. If you are hearing something while under boost... look for a boost leak and inspect the turbo for excessive shaft play.
Great job🎉
Thank you for watching!
If the diverter valve isnt working correctly would that cause oil to push out of all the injector seals? Both sides of my valve cover has oil sitting in the areas around injectors, as well as p0299 code, plus i could hear what i assumed was a turbo leak under acceleration
Year, make, model, engine? I assume direct injected? Boost is measured in front of the cylinders... meaning, if you have oil at the injector seals, the oil is coming from within the cylinder / being pushed out during compression or power stroke (valves are closed). So the "leak" is not measured / affecting boost (in my mind). Check the intake hoses from the turbo to the engine... look for wetness / oil around clamps / fittings or hoses themselves. If you can't find a leak, have someone attach a "boost leak test kit" to the intake system. Air is forced in at one end and the other end of the intake is plugged off. You can then listen for leaks and follow the noise to the leak.
Litteraly going to translate this video for my french dad. God help
Thank you for watching.
Hi Thomas, I have a 2006 1.9tdi Golf that that the computer gave me this same code. when i'm driving along the car is shaking like I'm playing with the accelerator, it wants to cut off. Any ideas you may give me from your expertise would be greately appreciated. I will check for this same issue first.
Great video, thanks
Your engine will not have the same valve.
Follow the steps in the following video starting the 3min mark:
ua-cam.com/video/b0WPeWfWUrc/v-deo.htmlm59s
Let me know if you have a) vacuum at the vacuum hose when the engine is at idle and b) if the turbo actuator rod moves when the engine is started (have someone start the engine while you look at the actuator rod).
Hey Thomas, got a 1.6tdi vw polo and recently its been going into limp mode after 10mins of driving, after the diesel engine management lamp starts to flash. Found out its got the P0299 code. Taken it garage and they've advised i need a new turbo which is 700+ excluding labour! Any recommendations thomas ? Would really appreciate it. Cars done 120k if that helps
I don't know how they tested / checked the turbo... if it is a service garage that is familiar with VW's / TDI's, then I would assume that they know what they are doing. You are better off getting a second opinion from a another service garage, then what I would be able to "guess / suggest", since I can't see, hear, drive the car from where I am. =)
It be nice to know which car model you're working on🙄
Doesn't matter what car... if the engine doesn't have a diverter valve, then the video doesn't apply. Diverter valves can be turbo mounted or remote mounted... but fail in a similar way. So you see... it doesn't matter what car I'm working on. As the owner of a turbo vehicle... you just need to know if your engine has a diverter valve or not and where it is. If I limit my video to a specific car brand or engine, less people would benefit from it.
2014 passat tdi se po299 code sounds like a high pressure valve letting off. I am thinking it is the turbocharger boost solenoid. What do you think?
It's not easy recreating sounds (boost leaks) when the vehicle is stationary. Luckily, TDI air leaks will usually result in oil stains around the leaking area... have a look at all the charge pipes from the turbo to the intake. Focus on the areas that have an oily film / look moist. Cracked hose, plastic charge pipe / intercooler etc.
Hi Thomas, I have 2007 Audi A4 3.0 Tdi and I’m not seeing the diverter valve, does it has? If yes where is it?
Diesels do not use / have diverter valves (as far as I know). Check correct movement of the turbo actuator rod. I'd have to check if it is a mechanical linkage or electronically controlled. Let me know if you have issues determining... and I will look it up.
Sorry if I missed it, but is that vehicle a 2012 Ford exorer. 2.0L ecoBoost (ecoBUST)???
THX
VW....lol
P0299 applies to all Turbo charged vehicles... your "diverter valve" may or may not be located in the same place.
Yes great video, thank you 👍
Thank you for watching... if the diverter valve is OK, then check the wastegate actuator rod for excessive freeplay (worn flapper shaft).
@@EXOVCDS Hello and thank you for your video and email reply to possible faults.
I haven't yet started to work on.
What I can say is,
1 - my scan tool has a fault code turbocharger underboosting. I can clear the code end the engine light goes off. The vehicle sometime afterwards when it loses it's power the engine light will come back on.
2 - if I turn the ignition off, then turn the ignition back on, the caddy immediately drives with boost and and power.
What is your thoughts ?
Thank you very much kind regards
Ben
@@bencroft4654 did he reply you on this comment
Hi, I have the same problem with my mondeo mk5 2l ecoboost petrol, is this the same one as you are working on. If so where did you get the valve from. I have been told to replace the complete turbo.
This is a VW / Audi turbo... I don't know if Ford uses the same turbo. If someone already looked at your turbo and concluded that you need a turbo... then it's most likely a turbo that you need.
Do you remember the year, make and model of this car you worked on in this video? I own a 2007 Audi A4 2.0 Turbo and I'm having a very hard time breaking the top nuts loose due to the location. I'm thinking about removing the oil line (connected to the engine) for better access to the diverter valve. Do you think this is a good idea? Any idea of the torx bits size to these oil line nuts?
This was a 2006> VW... the engine & transmission sit transverse. Your Audi is a longitudinal mounted. You should not have to move oil lines to get at the diverter. Here's a video of the same setup as in your car: ua-cam.com/video/zYbO4toEcDw/v-deo.html at 1:49 the diverter is visible. At 1:56 you can see the mounting bolts and the "teeth" marks left on the bolt heads from a "bolt extractor socket". My allen wrench / hex bit would not break the bolts loose, but the extractor socket bit into the bolt head and broke it free. Common extractor socket set: www.amazon.com/Topec-Impact-Remover-Pieces-Extractor/dp/B07MX8B6XX/
I have a 2013 GTI with under 60,000 miles, I threw the P0299 code the care seems fine, not in limp mode, and doesn't feel underpowered. The car is completely stock other than a resonator delete from ECS tuning. Any advice on what to check first would be greatly appreciated.
You need to do some data logging / scan tool data viewing, to determine when / at what rpm & load boost is less than specified. Any time that actual boost is less than specified for 6 seconds or more... p0299 will set. P0299 is more likely to get flagged at moderate / mild boost conditions (leisurely driving), opposed to high boost conditions (spirited driving).
Did you get this sorted Amos? I have the same issue?
90% of the time it's a worn wastegate / linkage / bushing. Replace turbo... after verification of freeplay in linkage.
Hey Thomas! I have the same code was wondering if you’d be able to help me out a bit? Amazing video btw! Appreciate your work .
I have a 2010 VW CC Passat 2.0 Tsi 92,300 Miles
the same P0299 code just came on recently
If the code comes back during regular driving... but stays away if you drive more aggressively, then the problem is a loose wastegate flapper in the turbo. If you year a high pitch rattle every time the engine is shut off... that's the flapper moving (should have a tight fit / not wiggle). Turbo replacement to fix.
@@EXOVCDS Thank you for replying back! I appreciate your time & pardon me for the long response’ I just want to explain a bit more , The engine light came on during driving & hasn’t turned off since, so I took it to get the OBD2 reader & its telling me to replace TurboCharger Recirculation Valve. This was my worry because a month ago I got an oil change & I was told my axle is leaking grease from the boot, & it was a great amount of grease. Is it possible that since I have not replaced that axle or repaired it, may the grease have entered my turbo recirculation valve? & cause it to have low boost? Which would explain the low increase in acceleration when regular driving , I noticed it doesn’t reach the acceleration it normally does ever since the light turned on. I wanted to remove the diverter valve myself to see if maybe its damaged ? or just contaminated but i’m not too sure..
@@alexpacheco3259 if the valve is bad, it will also affect aggressive driving. Axle grease can not damage the valve. If you think the valve is bad... check it.
I have a 2010 Passat, also the 2.0t FSI with the same diverter valve. I do get the P0299 about once every 1 or 2 months. Aside from that I also have a cold start misfire (Intermittant on all cylinders but worse when cold) but the dealer that I bought it from said that the valves do not look bad at all when looking at them from a boroscope. Would there be any chance at all that a bad diverter valve could cause a cold start misfire, or the possibility that the misfires could cause the P0299 code to show up? Any thoughts would be great! Sorry for the long question!
Cold start misfires on direct injected engines are usually due to carbon deposits / buildup. Cold start misfires shouldn't set p0299, since the engine is not under boost. Check that the PCV system is up to date (most current PCV breather is installed), check for any excessive wastegate rod movement that could indicate that the wastegate / flapper valve is not closing fully.
@@EXOVCDS Yeah we did replace the PCV valve with the latest vw model at least, have not yet replaced the diverted valve. I plan to have the valves done in the next month or two at least was just hoping maybe the diverted valve was the problem. Thank you for the info!
If cold start misfires still occur with new diverter (but solves p0299)... try some induction system cleaning via a vacuum hose at idle & 2500 rpm... using straight water or a chemical cleaner such as Seafoam or BG Air Intake System Cleaner. Use caution when sucking liquids in to the intake manifold via a vacuum hose!!!
@@EXOVCDS We did try a can of the CRC valve cleaner, we did it through the air intake via the access near the air filter, and sprayed it past the Mass air flow sensor, but most of it was probably missed because it may not have gotten past the intake manifold flap. Did seem to slightly make a difference but then again outdoor temperature seems to be just as effective. Meaning when it gets warmer out it seems to have less of a misfire.
I remove the intake temp sensor (leave the plug connected so that the ECM still receives a temperature signal) and insert a tapered rubber vacuum cone fitting that is attached to a small diameter vacuum hose. I then start the engine and slowly feed the vacuum hose into the liquid (water or other) until the engine starts to run rough. Continue to dip & remove the hose from the liquid so that the engine does not stall at idle... if you get someone to hold the rpm higher, you can leave the hose submerged longer (but be careful!!!!). Listen to the engine & look at the exhaust... stop if anything doesn't sound or feel right. Shut the engine off after and allow the liquid (that has so far been ingested) to soak into the carbon. Start the engine and do the same liquid ingestion again. After installing the temperature sensor... take the car for a run at various rpm ranges. Check how she starts cold the next day. A borescope through the intake temperature sensor hole is how I check most of the valves.
Would this cause the car to hard/slip shift? When going from 2nd to 3rd gear the rpm rev up and there a jolt when it shifts. Only hard shifts that one time as it shifts fine after that hard shift.
No. Most likely a transmission issue (solenoid in the valve body or something else in the valve body). Year, make, model, engine, 4, 5, 6 speed automatic transmission?
Thomas EXOVCDS 2006 VW Passat 2.0 automatic transmission
@@grappler1999 Scan the TCM (Transmission Control Module) for fault codes... or go take it to a transmission shop for a test drive & scan.
Good video. What size ratchet did you use to fit the 5mm allen key?
A little one.... use whatever size you can get in that area. You can also just use an allen wrench.
@@EXOVCDS Thanks man. Have a great day.
@@EXOVCDS hi iv got a bmw 1 series 116d, code p0299, underboost, only seems to happy mainly in higher gear when put foot down a little, then something like a min later turbos kick in then all is good on the world, any idea ?
@@natalieannlaird If there are no "boost leaks", you'll have to check / confirm correct wastegate operation & control by the ECM. If the wastegate is not closing fully (due to wear / excessive freeplay), boost will go past it, which results in lower power. If the ECM can not control the wastegate due to a faulty vacuum actuator or broken vacuum hose (I assume that is how the ECM controls it... I'm not familiar with BMW's), then that can also cause power issues. Start with a visual inspection and then you'd have to use a vacuum gauge to "T" into the wastegate control hose (if there is one) so you can see if vacuum control is present when driving. A good scan tool should allow you to activate the vacuum solenoid, to verify ECM control.
What is the part number for the new diverter valve? I'm having trouble finding the correct replacement for my 2014 Ford fusion...
I'm still at work... I'll get back to you later today once I'm back at home.
How do you know that you need a new diverter valve? Does your turbo even have one? There are many reasons for P0299... VW & Audi have diverter issues. I don't know the common problem Ford has.
My Audi just had a couple of p0229 codes in past few days. I guess that is the same problem you just fixed in the video. Can I have the address of your car garage?
There are several other things that can also cause the same code. You need to have things checked to determine what the problem is.
@@EXOVCDS Thanks for you reply. I don't have the equipment and knowledge to check. Is it OK for you to check the car at your workplace? Much appreciated.
I'm in BC... I don't advertise for my boss. I can't guarantee that I would work on it, or find the problem. I'd like to keep youtube & work separate. I would not want one of my viewers to end up disappointed with the service received.
When I unplugged my connector I got a bunch of oil that came out of it but it isn't even torn and I have a p2099 turbocharger underboost cel do you think that I should change it and do u think it will fix my cel?
It could be hanging up / sticking. Shouldn't have oil there, so it's bad regardless.
So I replaced my DV, since my Indy shop recommended for me to hangs due to this under post code. Went for a drive and the CEL came back on, then they recommended to change the boost pressure sensor. Does that seems right?
Year, make, model, engine?
Hi Thomas i have a vow caddy 2009 I can feel there is no kick when I drive and the fault code p0299 is present. The van still drives though. Is it a case of the turbo has packed up al together or could there be a simple solution. Thanks a lot for any help or advice.
What engine (production code) gas / diesel?
1.9 TDI Diesel
Watch this video and do the same test / check. Let me know what you find:
ua-cam.com/video/b0WPeWfWUrc/v-deo.html
Video should start at 2:59
Any luck?
First off thanks for you response. I don’t have any black smoke but have tried using a turbo cleaner or 2 and it seemed to come back a bit but had loss of power again. Im going to see if I can follow the vid link you sent. I’m not a mechanic but am practical and will let you know how I get on thanks so much.
Hi thomas, i have the error p0299 on a passat b6 2.0 tdi 2007 engine code bkp, i have cheked the turbo, intercooler, vacuum pipes, solenoid, turbo actuator and nothing changed, in the 3 rd gear i got the limp mode, the acceleration is dead ... what do u think i should check? Is possible be the catalysis? Is the last thing i think would be the cause. Thank s very much.
P0299 boost pressure not reached
I don't know how you checked all those items... if the catalytic converter were bad, you would have no power all the time. I don't know what else to check.
Hello my english is not so good.I have mitsubishi lancer did 2.0 with 2 faults code P0299 and P2563.First fault code is always present second only when i push gas more than 3500 rpm.Can you help my with some advice please i was in some service and mechanic say turbo or turbolader sensor or actuator or dpf stuffy nobody is sure.Thank you
Check your turbo actuator to see if it has an electrical plug on the side of it. Like this:
images-na.ssl-images-amazon.com/images/I/61pNltS2OBL._SL1002_.jpg
Black plug at the end... if there is an electrical problem with the wiring (corrosion, broken wires, bad connection etc), then that could be setting P2563.
P0299 usually is set when turbo boost is lower than it should be. If there are no boost leaks and the turbo actuator moves correctly, then the turbo might be bad.
I can not see or test your turbo from where I am, so I can't really help, sorry.
2013 vw tiguan 2.0 tsi CCTA
Got code p0299. Thats the only code. There is no movement/play on wastegate rod, dv is good,new pcv, map is reading properly, I unplugged the n75 and no changes,also unplugged vacuum line to wastegate, the car feels N/A. Vcds shows a peak of 1500mbar. 1,000mbar is normal atmospheric pressure. No boost leaks. Any ideas?
There is no turbo shaft play and wastegate valve looks good.
How did you check / look at the wastegate flapper?
@@EXOVCDS yes. The wastegate is perfect sealed. I removed the downpipe to check. No shaft play either
Don't know then... you'll have to keep checking or recheck everything.
@@EXOVCDS Can a timing issue cause this P0299? i just installed a new turbo and still have the same code
@@jose15238 timing issue would be flagged by the ecm... if you don't have any cam/crank correlations codes, timing is ok.
Very observant customer. I don't like little fasteners that feel like their going to snap either.
The internet is great for finding information and then taking it to your mechanic! I can only image what it is like back east with all the rusty bolts!
oh wow. So you guys haveing a tough time I see... :-/
In eastern Canada, they get a lot more snow than we do on the west coast. More salt on the roads as well... which turns vehicles into rust buckets. I sometimes have to work on a rusty vehicle... it's not fun. =(
So with the p0299 does the engine runs with no boost? Or does it still boost up
Depends on what the problem is. It can still have boost, but not the correct amount... or it might have no boost at all. Using a scan tool to view boost pressure, listening for boost leaks during a test drive, physically checking the wastegate actually linkage for excessive freeplay etc., should help determine where the problem is.
@@EXOVCDS just kidding it my waste gate. There is a lot of play in my gate.
Hey. I have a 08 Passat and I have the p0299 code, I have good acceleration. Could it just b that the diverter is bad & throwing that code?
A loose wastegate flapper can trigger P0299 under light load conditions... boost will feel fine when accelerating, but boost can be "lower than specified" when driving at moderate / light boost levels. Both the diverter & wastegate flapper are somewhat easy to check.
@@EXOVCDS how can I check the waste gate flapper? Sorry I’m new to Volkswagen stuff and turbo stuff. Never had a car with turbocharger.
Watch the following video (starting at 1:55)... you can see the wastegate operating rod to the left of the loose flapper valve). Locate that rod in your engine bay (from under the car) and wiggle the rod. If you hear a metallic rattle... that's the loose flapper valve.
ua-cam.com/video/eACH26jr-SE/v-deo.html
i have a 06 jetta tdi that has only a P0299 code and it's making a louder noise than usual also it's blowing smoke out the exhaust... could it be the diverter valve failing?
Different turbo design on yours... probably the turbo actuator is no good (broken diaphragm) or the vacuum supply to it. Watch this... do some testing and get back to me.
ua-cam.com/video/b0WPeWfWUrc/v-deo.html
Oh man that kind of work (stripped fasteners) is never fun. I always get nervous around small, hard to get bolts and nuts.
I turn the camera off when I run into issues... no-one needs to see my struggles. I'm sure it could be helpful to some, but recording while the pressure is high isn't helping the repair. =(
What size Allen key are you using? My friend from orielly is asking
5mm
@@EXOVCDS thanks for the quick response.
I have a 2013 Dart SXT. I am looking for the replacement part. Can you send me a link as i am having a hard time finding it.
This part is a common VW & Audi failure item... I have no idea if the same applies to a Dart or if the Dart even has the same part.
My p0299 code just popped up. The guy i bought it from replaced the turbo a few years back. The car currently has 120k. Would it most likely be the Dv or should i check the waste gate for play first ? Please please respond
Year, make, model, engine (product ion code)?
Thomas EXOVCDS 07 Audi A4 Quattro b7 2.0t
Check the diverter and for excessive movement of the wastegate rod where it attaches to the "flapper" (wastegate).
Thomas EXOVCDS so just check them both at the same time gotcha. I dont know if the previous owner ever replaced the dv so i went and bought the updated one with the piston just to play it safe
Thanks for actually replying man I appreciate it
I just bought a 09 tiguan.i dont have any codes coming up but i wanted to find out and upgrade to the newer style dv if i dont have it.im abit confused cause i want to get the gfb dv+ but its only the top half of the dc that it replaces so do i need to buy a revision dv and the gfb dv.i wanted a forge spacer too as i like the blow off valve sound
Contact the seller... it might be designed to fit the old & the new style, since from the look of things, the only thing that is different between the two DV's is the plunger part.
Can a damaged Intercooler cause this code?
Yes... if air is leaking out.
wiki.ross-tech.com/wiki/index.php/16683/P0299/000665
Hey Thomas! I have VW Passat B6 1.9TDI 2008. Same code problem in VCDS. Driving around 100-130 km/h cause 'engine failure' on a dashboard with 'check engine light' and blinking 'diesel engine pre-glow'. Most important, after thar car has no power, no boost until i restart the car. What possibly could make these problems? Thanks for any help!
Sorry for my english.
If power is ok until high speeds / loads are reached, then I think the ECM is reducing power to protect the engine from too much power / boost. Check that the turbo vane actuator pod is working correctly and that the vanes are not stuck. Usually, "not enough boost" will not result in "limp mode"... but overboost will. The actuator pod should receive at least 17"Hg of vacuum and the vane lever should come to rest at the stop screw with 17"Hg of vacuum applied.
@@EXOVCDS thanks for response, ill check it soon with my mechanic and ill let You know!
Maybe i specified problem incorrectly and circumstances of it. Yes, it happens when im driving around 100-130 but problem in my opinion has connection with engine speed(rpms), but u already know, i guess (it always happens on 5th gear). When i drive 'economcly' and switch gears when engine reaches 2000 rpm, so when it comes to switch to 5th gear and drive on it for some couple of minutes in around 2k-3k rpm, 100-130km/h, problem happens. BUT i can avoid the problem by driving dynamicly and fast. When it comes to switch from 4th to 5th gear, i do it above 4k rpm and then i drive on high rpms and above 130km/h. And then everything is OK. Of course until i go down to lower rpms on 5th gear and problem starts. But i cant drive like that all the time on our beatiful polish roads lol
Maybe the problem is caused by injection system (or whatever is called in english)? Or second option might be a problem with turbo intel pipes? Like they may be leaking or sth?
P0299 = the ECM is not able to control boost (boost too high or low). You need to use a scan tool to monitor Boost pressure & MAF sensor information... to determine if boost higher or lower than what it should be. Some information about P0299:
You need to use a scan tool to monitor Boost pressure & MAF sensor information. (Bottom of page click on picture) a problem with that vacuum reservoir, can cause less vacuum to get to the turbo actuator.
hi where can be located in 2010 seat leon 2.0L tdi BKD the diverted valve?
It does not have one.
I have 04 1.8t a4 with the code p2099 . When I drive its sounds like there’s a leak . Is this one of the symptoms of a diverter valve ?
If you are hearing air escaping (boost leak), it's probably not due to a diverter issue. Look for signs of an air leak, by checking all the rubber air hoses between the turbo & the throttle body (loose clamps or torn hose). Look at the intercooler through the front bumper grill... the plastic trim around the cooler can dig into the cooler and cut a hole over time.
Thomas EXOVCDS the hose from the the Intercooler to the turbo blew off . Bad installation of Intercooler by some one else
@@bakedout09 easy fix... thanks for the update.
Mr. TOMAS... engineer good morning I need your help I have a wv amarok and emit large amounts of black smoke through the exhaust oil is contaminated with gasoline. There is no dtc in the rail the pressure at idle is 38bar, not exceeding 40 bar at idle, the injection pulse is 2.5. Some idea to follow in the diagnosis thousand thanks for time God bless you.
is 2014 2,0 tsi.
Carlos Sanchez Bad injector? Not sure.
If your diverter valve has oil leaking, then is the turbo bad too?
Also, the turbo lag seems to be getting more noticeable with weaker boost.
PCV oil is normal inside the turbo / intake system. Check the turbo for excessive play to determine if it is from the turbo.
I will check for that. Fingers crossed because that valve is a way cheaper fix. Thank you for the extremely quick reply. Wasn't expecting that.
It would be helpful to know what car this is?
P0299 is a generic code that applies to all turbo engines... the location of a "diverter valve" might be different on different engines, but the checking / verification of its operation is the same. Since this is a VW / Audi channel... 2.0T, specifically it was an EOS. It would be more helpful if you said:
**I have a "insert make of car" with a "insert engine" and this trouble code "insert fault code".... does my car have the same diverter or should I be looking somewhere else. Thank you for taking the time to answer my question!**
@@EXOVCDS Hahaha OK you are right
@@EXOVCDS I have a Volvo c70 2.0d 2008 which has the same 2.0hdi 136bhp D4204T engine which is made by Peugeot. It doesnt have any boost keaks or fault codes. It is very sluggish and only gives 29mpg average. But if I switch off the engine and disconnect the electronic egr valve, the mpg and power improves massively. I then get 60mpg. But if I switch the car off and on again (with the egr still disconnected), I'm back to no power, 29mpg, and a load of fault codes including P0299. If I reconnect the egr valve, all the fault codes go away, but im back to only getting 29mpg. Any ideas? Thanks
Sorry, I'm not familiar with Volvo / Peugeot engines... try leaving a comment at this channel:
ua-cam.com/users/swedasianautoca
@@EXOVCDS Thanks for your reply. Strangely my car has been giving a relatively good 50mpg and good power since I reconnected the egr electrical cable. But I know it's only a matter of time before I will randomly get power loss and poor mpg of about 29mpg again...
I replaced my diverter valve and im still getting no good acceleration , do u think i should replace my turbo my 2008 audi a4 has 228k miles
There are many reasons for p0299.... the diverter is just a common part. Check all your air hose connections from the turbo outlet to the throttle body. A bad PCV can cause low boost... the electric valve that controls the wastegate could be bad. Too much play in the wastegate (of the flapper valve) could be the cause (engine off, grab the wastegate rod and wiggle it).
Drill one of those bolts out would be a real pain !!
I'd call in sick after breaking the bolt!
That looked to close to heat them up with a torch. Anti seize is a good cure.
Definitely not torch friendly!
i have multiple p0229 codes that repeats and it shows turbo underboost does this mean my turbo is bad or that valve ..?
Could be turbo, could be valve, could be PCV, could be air / boost leak... you need to check one thing after the other until you find the problem. Year, make, model, engine? Remove the valve and have a look.
@@EXOVCDS I have the same issue how much do you charge for having the car looked at?
I have a 2010 audi a5 tfsi when I plug the computer in it says turbocharger supercharger underboost
@@francescogallo7770 Who is your regular repair shop? ua-cam.com/video/7fk6cSDE3hE/v-deo.html
Thomas EXOVCDS i figured that the turbo is bad because that’s all the codes that keep repeating and it’s a 2005 audi a4 1.8t
Hi Thomas, appreciate your videos, so very helpful, I am having an issue with a polo 2010 1.6 CR tdi 75 bhp, p0299 error, I brought the car at auction and it had a blocked dpf that I forced regened, also it had a faulty egr that was replaced with used part, the garage gave me back the car and I drive up the road and got the coil light on and limp mode, vcds gave me the above code , I took back to garage and he thinks it maybe the turbo actuator, so I have ordered one from eBay, my question is do you know if my engine has one of these common diverter that we should also check ? the exhaust also had a blow and the garage welded near where egr was , my exact reading with vcds is - p0299 (237) - control range not reached ,, any advise as to where to check would be ideal, my mechanic is not completely up to date with VAG cars, so be able to point him in right direction would be helpful,
thanks very much , love your work from the UK
Thank you for the kind words and thank you for watching!
The TDI Turbo is quite different & functions different than the one in this video. P0299 is usually set when boost is not where it should be... mainly when the engine is underboosting. However, I think the same code can set if the ECM can not keep boost from getting too high. This would explain why you have limp mode... the ECM is protecting the system from overboosting. On vehicles where boost is not enough, the ECM does not have to worry about engine damage, so it does not enter limp mode. Monitoring boost with VCDS to see what happens would be a good first step. If boost is consistently higher than it should be, disconnect the vacuum hose from the turbo actuator pod and see if the same thing happens.
Thank you very much for such a swift reply!,, you are a world of knowledge on VAG cars!, I already received the new actuator today and guy will fit it asap, if the car still have problem after that I think we will be stuck as to where to look next,, its been one fix after another with this polo! I will have to figure out where boost monitoring is on the vcds as I not to familiar with that setting yet,
many thanks again for your swift reply, all the best
@@EXOVCDS
Just to update you here, my fault was because of the turbo actuator, part cost £60 - $85 and man fitted it today, car is running great with full power now! , great stuff mr @@EXOVCDS
Thank you for the update. Good to hear that the problem is solved!
Changed my diverter valve to find oil was coming out of it also,cleared the code and 20 min drive it came back on? What could this be now?
Year, make, model, engine... check anything that could affect boost.
Do you know where I can buy a Pierburg diverter valve in Vancouver?
Lordco should have them / be able to source one for you. Tell them you are with the vw club to get a discount.
@@EXOVCDS thanks thomas. Will give lordco a try.
I have a problem with the code p2096 in bmw 535i xdrive twinnturbo change the coverage of valves, pcv new chargepipe, sparkplugs new. Help with this code please
I'm not familiar with that engine... straight 6 cylinder? I'm not sure if "P2096 bank 1" refers to cylinders 1 to 3 or if cylinders 1 to 6 are all bank 1. If bank 1 only refers to cylinders 1, 2 and 3, then you have to look for something that is causing those cylinders to run lean (too much air or not enough fuel). This could be due to a faulty fuel injector that is not spraying enough fuel... using a scan tool, you can look at cylinder idle contribution (differences in power). If bank 1 refers to all cylinders, then look for something that is affecting the entire system (could also still be a fuel injector issue).
Thank you ! Checked mine and is leaking oil thru connector... KAPUT!
Let me know if it has a rubber diaphragm and if it is torn!
i have a audi 2006 a4 quatto 2.0 code po299 runs good but turbo slow to kick in uses oil and also bad gas milage not a mechanic but been told different things also on my cheap reader it has 7e8 and 7e9 got no inea what that is could you help old man on fixed income don't want to just keep guessing
Not sure what 7e8 & 7e9 mean... P0299 is often due to a bad diverter valve (as in this video, the "old style" valve). If the diverter is OK or if it is of the new style, then it could be that the turbo itself is bad (wastegate loose). Oil useage could be turbo related or PCV related.
thank you god bless you in the name of jesus Christ
I’m thinking to myself oh a diverted valve I can do that right? Nope. Back to the dealer
ua-cam.com/video/qztuEucrNBc/v-deo.html
Does the A6 2.0t 2007 have a diverter valve i cant seem to find it
I do not think so... I'd have to check a manual.
What egine is this? 1.9tdi, 2.0tdi or other?
2.0L turbo 2005>
Is the DV also known as the N249 Valve?
On this engine... yes.
On older engines it refers to the vacuum control solenoid (for the cut-off / recirculation / diverter valve).
@@EXOVCDS I have a 2014 VW Tiguan 1.4TSi. The dealership said the N249 Valve is faulty and they would need to replace the whole Turbo for that? Does that sound accurate?
I don't know. I don't have information on that year vehicle / engine. I don't know if the N249 can be changed. Sorry.
I have a 2006 gti and I replaced my dv and removed the spacer that the previous owner had on there and I'm still getting under boost and p0299
There are other causes for p0299... not just the diverter. Anything that can cause boost differences needs to be checked.
@@EXOVCDS I ran over a stupid cone at night and bge had a line of cones across the road over a blind hill with no warning signs. So the cone got up and smacked something near my turbo. I replaced the dv removed the spacer cause the scanner at AutoZone threw a turbo recirculation valve code. The diaphram was broken in the old dv anyway so idk I thought that would fix it. Nope. What else could the cone have hit that would have caused my car to all of the sudden act like this? Or did the flap inside the turbo just happen to fail because the car has 145k? I looked under my car and all of the lines coming off the turbo look like they are in tact and tight.
It was also giving some MAF sensor codes too. And I just replaced my MAFS a couple of days ago with a brand new one .
@@arestheking7912 did you find a fix? Im getting same code
What camera glasses do you have my good sir?
MakeLifeFun The ones that I have are no longer sold by the company that I bought them from. These are the closest that I have found to mine: ivuecamera.com/products/1080p-hd-camera-glasses?Thomas%20EXOVCDS%20(UA-cam%20Channel)&Link%20In%20Video%20Description&Thomas%20EXOVCDS%20(UA-cam%20Channel)
Keep in mind that the "close-up view" was with my cellphone!
oh, thank you for the link Thomas, keep up the work as always
hi! do you hawe a link to the replacement part?
Year, make, model, engine production code?
I got mine off Amazon. Just set up your garage for Amazon then filter results and it will only show parts for that vehicle. Read the questions asked also.
Have a 2010 Vw tiguan 2.0 tdi got one.
Got one? Boost code?
wiki.ross-tech.com/wiki/index.php/16683/P0299/000665
Replaced many of those valves, those Allen head bolt send the pucker factor to 12😟
I've had one strip out on me before, but was able to get vice grips on it (was the lower one) and worked it out mm by mm. Took forever.
Thomas EXOVCDS I had 1 that was stripping the head, and it was the top bolt🤤but got it out
I don't have an extractor socket small enough to bite the outside of those small bolts... I should really look into getting one!
Thomas EXOVCDS I have an inside extractor that size, but not outside either😑
Was on the 2006 jetta tdi?
No space for someting to give it a impactsomething... If only a engine was made for easy maintenance.
All things considering... it's not that bad, as long as things come apart nicely! =)
Im also having P0299 code. I already replaced myair filter, SCV and actuator. Cleaned my EGR, intake manifold and fuel filter. What else should i check?
Year, make, model, engine?
Its a 2014 Kia Sportage 2.0 CRDI
I don't know anything specific about Kia's... sorry.
If it has a diverter / bypass valve like the turbo in my video, check that. Could also be a loose hose clamp / fitting anywhere between the turbo outlet and the throttle body. Worst case, it is a problem with the turbo.
2004 jetta TDI a4 p0299
Check for boost leaks... check operation of turbo actuator rod operation.
Let me know what you find... post videos of turbo rod activation on your channel so that I can see.
so I will do these days I upload video thank you very much men
OK, let me know when you have uploaded a video. This video might help... if you have a vacuum gauge, you can check the system. ua-cam.com/video/cj63_qkX6Hk/v-deo.html
ua-cam.com/video/zrk1EwTy39U/v-deo.html
this is the video of my jetta tdi from the bottom to check the turbo
Passat b5.5 1.8t AWT ENGINE am having this codes
17705/P1297/004759
wiki.ross-tech.com/wiki/index.php/17705/P1297/004759
Bottom of article talks about a bleeder valve (check valve)... here's a video of a failed valve.
At 1:50 of video you can see the valve. Find it on your engine and check it.
@@EXOVCDS for the breather valve i have that T section but mine goes directly in it and it goes directly in the intake manifold vhen i check for faults i have this two only
Boost presure control and this pressure drop
The second one started to show when i replaced the ruber pipes that goes on intercooler and to the intake manifold
@@mirkokolar1488 how does it idle? If idle is rough, pinch the pcv check valve hose at the intake manifold to see if idle gets better.
The diverter valve can stick open causing lack of power. Best way to check for pressure drop / boost leaks, is to pressurize the intake duct from after the turbo to the throttle body.... then spray some soapy water to look for leaks (if you can't hear any leaks). Usually, leaks that you can't hear... won't set codes.
@@EXOVCDS i am going for diverter valve today to check it first then all other things it idels god only thing i have after driving for 4 hours and stop after 4 min. Gets rough idlle pres the gas padle and let go it is fine for another 2 min then again after stop for and half hour everthing is fine then
2012 Hyundai sonata 2.0T 4 cylinder PO299 code
Check anything that has to do with boost.
@@EXOVCDS would not having my oil or filter changed in 6000 miles have anything to do with it.
Don't think so.
@@EXOVCDS where does the oil from the bad diverter come from
@@johnsimon911 On VW & Audi engines it mainly from the PCV system... worst case it is from the turbo. PCV fumes from the valve cover are vented into the turbo inlet and are then forced through the intake plumbing to the intake manifold.
I also have p0171 code.
I'm not sure if P0171 is related or not... to P0299 (probably not).
@@EXOVCDS yes I don’t think so but I have that code as well...looks like it can be a simple fix but just wanted to ask if you had any advice on it.
Could be a few different things... as listed here:
wiki.ross-tech.com/wiki/index.php/16555/P0171/000369
No year, model, engine size & type!? Not very professional!
Одно понял, капут клапану...
очень капут
Code erreur P0299
Yes... many reasons for that code. My video only shows 1 reason.
0
If you have questions / need help... post something that will help me, help you! Year, make, model, engine... and what the problem is.
@@EXOVCDS Hey Thomas! I have the same code was wondering if you’d be able to help me out a bit? Amazing video btw! Appreciate your work .
I have a 2010 VW CC Passat 2.0 Tsi 92,300 Miles
the same P0299 code just came on recently
@Alex If the code comes back during regular driving... but stays away if you drive more aggressively, then the problem is a loose wastegate flapper in the turbo. If you year a high pitch rattle every time the engine is shut off... that's the flapper moving (should have a tight fit / not wiggle). Turbo replacement to fix.