ATTN: The information contained in this video was intended to help viewers with the most common type of modern fuel injected vehicles that use O2 sensors along with an MAF sensor and IAT sensor.
What are these strange readings?! Is this sensor broken?!? You said it yourself the values should go from 0.1 to 0.9V, which are 100 to 900mA, and we see -12 to +6mA ?!?
@@ivanbnv8354 He said typical readings .. some vehicles have different parameters which is why they all have different part numbers. years and years ago o2 sensors were all pretty much the same and different part numbers were simply to denote the length of the wires. Modern sensors are used for all sorts of data and have different parameters. wide band sensors are used in performance applications and cover a broader range and as such cost a shit ton more money
@@ivanbnv8354 🔴 What Is Islam? 🔴 Islam is not just another religion. 🔵 It is the same message preached by Moses, Jesus and Abraham. 🔴 Islam literally means ‘submission to God’ and it teaches us to have a direct relationship with God. 🔵 It reminds us that since God created us, no one should be worshipped except God alone. 🔴 It also teaches that God is nothing like a human being or like anything that we can imagine. 🌍 The concept of God is summarized in the Quran as: 📖 { “Say, He is God, the One. God, the Absolute. He does not give birth, nor was He born, and there is nothing like Him.”} (Quran 112:1-4) 📚 🔴 Becoming a Muslim is not turning your back to Jesus. 🔵 Rather it’s going back to the original teachings of Jesus and obeying him. More ....
I’been a owner operator for years in by far this is the best video ever you sr. With this 12 minutes about sensors how they work save us tons of money and time off because of problems with this def sensor problem thank you very much for you video and I will be watching all you video cus this my friend is the real thing and it’s for free god bless you sr.
Thanks Jimmy! Be sure to look over my video playlists below for many other videos of interest to you, and most importantly take one minute to share a link to my channel with others on social networking sites. ua-cam.com/users/electronicsnmoreplaylists
You are my guardian angel. Thank you for this content. I will be watching a lot of it multiple times in the coming days. This one will be watched again later today or tomorrow when I run the O2 sensor tests on my Honda and BMW sensors. Both cars had blown gaskets and require full rebuilds. One is FWD and the other is RWD and I don't have a shop or power tools so I do everything by hand between 2 trees and under a tent on a sloped driveway. I started with zero knowledge, but I have documented the process and once I am done no one will be able to tell that these cars weren't built by the factory. (Other than the engine swap numbers) so thank you for the detailed videos. I am a fan.b
Glad you liked the video Johnny! Be sure to look over my video playlists below for many other videos of interest to you, and most importantly take one minute to share a link to my channel with others on social networking sites. Thank you ua-cam.com/users/electronicsnmoreplaylists
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Great vid and methods explained very clearly. Made me think about using the oxygen from the oxy/acc bottles in the shop, and feed it in with the torch head on a lid.
Glad you liked the video Jo! Be sure to look over my extensive video playlists below for many other videos of interest to you, use supplied Amazon links to support my channel when making purchases(No added cost to you), and share links to my videos with many others on social networking sites. Thank you, and stay safe! ua-cam.com/users/electronicsnmoreplaylists
@@electronicsNmore Professional mechanic and used to diagnosing these on the vehicle running and going by how fast they change readings but ever since got into removing them and cleaning in the sonic cleaner never really had a method to verify the heating circuit usually just cleaned them installed them and see if it fixed it.. with these sensors costing up to $200 these days and aftermarket ones utter shite been in the habit of cleaning the oem ones because to many times if you replace one you have to replace the other as well because mixing brands can get trouble codes when both parts are working they just have different value ranges.
Great video. It would be nice if you could time stamp the parts of the video in the description so we can come back and skip to the testing procedure or other sections for reference.
Thanks for the time you spent making the video. I do have questions if you can help further: On my 2008 Kia Rondo I am dealing with OBD code for the downstream sensor that seems to not respond to O2 variations. So I purchased two sensors just to verify what a good sensor should show on test bench. Bosch 15320 and NTK 25183. The NTK is lot more money but it is OEM. I wanted to test them as you explained. Temp at the outer casing on the tip was around 360 - 400F during test. The way I do it is slightly different. I start with sensor in the jar with candle lit in jar. I place a lid over the jar and wait until the flame is gone. Then I check voltage: NTK sensor shows - 8.5 mv. I removed rapidly the sensor from the jar to see the reaction when exposed to ambient air: The voltage quickly went to -14.5 mv. Notice the polarity reading is negative. I did pay attention to connecting the voltmeter + probe to the black wire which is supposed to be signal wire on this sensor. I thought that signal would be considered the positive side, correct? Also notice the voltage going from 8.5 to 13.5 when O2 level increases. This is contrary to what you experienced in your test and I think contrary to what the sensor does in a car. In a car the sensor voltage decreases when the O2 increases. I wonder about whether I have the wrong sensors or it is simply the nature of this simple test. b The Bosch sensor reacted in the same manner with -10.6 mv without O2 and - 17 mv in ambient air. Any reply to my comment would be much appreciated. Thanks Richard
Glad you enjoyed the video Ivan! I have many excellent videos on my channel, so be sure to look over my extensive video playlists for other videos of interest to you, rate thumbs up, and most importantly share my channel with others. Thank you
@electronicsNmore If the sensor is plugged into the vehicle harness *but not the cat* and key switch is turned to the on position (getting 12V from) should the sensor heat up?
Glad you enjoyed the video! I have many great videos on my channel covering many different subjects, so be sure to look over my extensive video playlists for other videos of interest to you and most importantly share. Thanks
Glad it was helpful! Be sure to look over my video playlists below for many other videos of interest to you, and most importantly take one minute to share a link to my channel with others on social networking sites. Thanks ua-cam.com/users/electronicsnmoreplaylists
good test .. Because in most cases the sensor is OK, and the problem lies somewhere else .. Injectors are dripping / fuel pressure too low / incorrect air in the intake area / ignition system defective.
If you only have a 3 wire O2 sensor. to test voltage , do you hook up the two white wires ,then one to the black then the last one do you touch the body of the O2 sensor for ground... cheers
To drive the Oxygen sensor to his maximum voltage, you can mount the sensor in a piece of metal tube, and pull this tube it vacuum. This only works offcourse if you have a electrical heated oxygen sensor. The voltage is created by the internal capsule which contains pure oxygen on the inside, and the less oxygen on the outside of this capsule, the more voltage difference is created by the in and outside of this capsule.
Good video. Rewatched. Any concern (ever) with voltage reading in millivolts? 5 millivolts- for example- is 0.005 volts. Proper reading range to be between (0-1v). I do understand this test shows viability and quick response.........but Id think the voltage would be higher. What am I missing? Maybe not entirely not enough? Combustion gas would have far less oxygen - somehow? Please advise. Thanks!
I tested my O2 sensor and it showed stable 4 mV (0.004 V) in room air. I tested it other way around, I blow the air to the sensor to get more oxygen to see if there are fluctuations, and voltage dropped to 1 mV, which is consistent behaviour.
Sir , my honda jazz ivtec has P0420 code , i tested the O2 sensor by this method and results was Heater is working, After heating the reading was around 5.5 at normal atmospheric condition , when introduced to a bottle of smoke ( as shown in the video ) it has decreased to around 1.8 , when i turned off the heater value increased to about 15 and again fall back to 0 slowly I had put the multimeter to 200mV position And change in the values was very quick
Thank you John! Be sure to look over my video playlists below for many other videos of interest to you, and most importantly take one minute to share a link to my channel with others on social networking sites. ua-cam.com/users/electronicsnmoreplaylists
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Hey, so does this mean, if i disconnect oxgen sensor from car and test it with multimeter, even if it shows a response, the oxgen sensor could still be faulty because its not getting tested and required heat temperature ?? Im getting a p0420 code , after fitting brand new approved cat after couple weeks, scratching my head, as checked the 02 sensors disconnected and they show a response, they aint at zero. When i clear the code, it comes back on after along drive. Thanks
I had to cut my old 02 sensor wire and wire to new one cuz the new 02 sensor it was too short it should still work right long as wires connecter back together?
Really well done we went into more detail then my automotive instructor lol I do alot of automotive electrical on my channel too you might get a kick out of it 🍻
My guess is that it is still not as hot as would be required to be displaying values in the 0.1v to 0.9V range. Just my guess at this point. Perhaps someone with more knowledge can chime in.
I'm trying to trouble shoot my tacoma 2000 and was wondering what happens to my truck if the black and gray doesn't work(which is what i'm reading with my multimeter)? Right now it's have a rough idle but runs fine when driving. But since it's an old truck, i'm leaning to an air leak that I cannot find. I'm asking because people always have trouble shooting videos on detecting bad sensors, but not the impact of a dead sensor on ECU. Since it's dead, how does the ECU compensate for it since there is no signal going to it from the 02 sensors? Does it run tell the computer to run lean?
This sensor looks like an A/F sensor because of the readings is too low. I know that the O2 sensor readings fluctuate between 100 - 900 mV. Or i missing something 🤔
@@619guy202 you are correct. The cheap ones, about $15 to $18, are often the single wire none heated wide band sensors. The expensive A/F guage and sensor kits are often a 4 wire heated narrow band sensor that can give far more accurate readings. While the wide band is literaly that. They flucate largely and an average reading is used. A verry budget model guage you will see this fast flucation while cruusing as the A/F is rapidly adjusted continously. A mid range model will have a buffer circut to average out the reading, the ecm still has to adjust the A/F rapidly to account for the average reading of the single wire O2 sensors. The narrow band sensors allow the ecm to more accurately adjust the A/F and a steady value will be observed. As it provides a more accurate reading in the first place. As the old saying goes garbage in garbage out. All though depending on your purpose a mid range or budget model can suit your purpose at a lower initial and life time maintance costs. Performance needs would all ways fall towards the more expensive and more accurate models. As the high end narrow band sensors can cost several hundred US dollars.
i have a mitshubishi endeavor 2004 i just replace bank 1 sensor 1 and im still getting check engine light saying bank1 sensor 1 is bad and the sensor is good what else can i check
I'd say 50/50. I've seen many people replace O2 sensors to end up with the same codes or new O2 codes because the MAF was faulty, female O2 wire harness had poor connections, or other engine problems.
This doesn't work with all sensors..it's been tried and with a brand new Denson sensor. only if you put the flame of the lighter, then the voltage jumps. when the heating element is on.
I got rid of it, it was a big waste of time for me. Some channels do very well with it, many others don't. I now use the Paypal link provided in the video description area for channel donations. Thanks for watching!
fyi O2 sensors DO NOT sense oxygen at all. It senses exhaust heat only, that generates a low voltage that the ecm interprets if the current ratio is correct or not, hints open loop learning mode. To which adjustments can be made to achieve the correct ratio. A bad O2 or MAF sensor will cause your car into closed loop with factory set fuel values to prevent engine damage but will result in slightly to bad fuel mileage.
Best off to clean all the sensors in a vehicle and test them all off the vehicle because if you replace just one it will not have carbon build up and give different readings that will trip a code so best to clean them all so if you replace one sensor the others will be clean and operate in the same range .. just like fuel injectors if you replace just one and rest are dirty and gummed up the engine is going to run poorly and possibly out of balance. clean them all replace the bad one with a new oem one or cheaper yet get one or 2 from a salvage yard really cheap and clean them and have a spare and possibly less then $20 versus $100 plus for an oem injector.. news flash cheap injectors from e bay are made in china garbage and part store one not much better.
Nothing wrong with using Harbor Freight jumpers for this sort of application. There are no high voltages present. Quite honestly, if you buy these from Mouser, Digi-Key or other "reputable" electronics suppliers you will most likely receive the exact same jumpers made in the exact same Chinese factory, but pay more money for them.
Fake? The Heater signal is pwm. You just put the sensor in 100% duty cicle for too long. You should use maybe a 6v battery for the vídeo become less fake. What the hell is 5v (no O2) and 12v (O2) signal in a O2 sensor? What is the make and model of the sensor and of the cars it fit?
ATTN: The information contained in this video was intended to help viewers with the most common type of modern fuel injected vehicles that use O2 sensors along with an MAF sensor and IAT sensor.
What are these strange readings?! Is this sensor broken?!? You said it yourself the values should go from 0.1 to 0.9V, which are 100 to 900mA, and we see -12 to +6mA ?!?
@@ivanbnv8354 what did you blow up fool
@@ivanbnv8354 He said typical readings .. some vehicles have different parameters which is why they all have different part numbers. years and years ago o2 sensors were all pretty much the same and different part numbers were simply to denote the length of the wires. Modern sensors are used for all sorts of data and have different parameters. wide band sensors are used in performance applications and cover a broader range and as such cost a shit ton more money
@@ivanbnv8354 🔴 What Is Islam?
🔴 Islam is not just another religion.
🔵 It is the same message preached by Moses, Jesus and Abraham.
🔴 Islam literally means ‘submission to God’ and it teaches us to have a direct relationship with God.
🔵 It reminds us that since God created us, no one should be worshipped except God alone.
🔴 It also teaches that God is nothing like a human being or like anything that we can imagine.
🌍 The concept of God is summarized in the Quran as:
📖 { “Say, He is God, the One. God, the Absolute. He does not give birth, nor was He born, and there is nothing like Him.”} (Quran 112:1-4) 📚
🔴 Becoming a Muslim is not turning your back to Jesus.
🔵 Rather it’s going back to the original teachings of Jesus and obeying him.
More ....
A propane torch should also clean it from build up carbon ?
What a terrific video! This will save a lot of people time and money. Looking forward to your next video!
Glad you enjoyed it Todd! I can't wait to see your next video as well, you have great content!
@@electronicsNmore
You just got a comment from project farm… im watching more of your videos lol!
I’been a owner operator for years in by far this is the best video ever you sr. With this 12 minutes about sensors how they work save us tons of money and time off because of problems with this def sensor problem thank you very much for you video and I will be watching all you video cus this my friend is the real thing and it’s for free god bless you sr.
Best O2 sensor testing video!
Thank you for taking the time to do an amazing job!
Thanks Jimmy! Be sure to look over my video playlists below for many other videos of interest to you, and most importantly take one minute to share a link to my channel with others on social networking sites.
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You are my guardian angel. Thank you for this content. I will be watching a lot of it multiple times in the coming days. This one will be watched again later today or tomorrow when I run the O2 sensor tests on my Honda and BMW sensors. Both cars had blown gaskets and require full rebuilds. One is FWD and the other is RWD and I don't have a shop or power tools so I do everything by hand between 2 trees and under a tent on a sloped driveway. I started with zero knowledge, but I have documented the process and once I am done no one will be able to tell that these cars weren't built by the factory. (Other than the engine swap numbers) so thank you for the detailed videos. I am a fan.b
Wish I had tested my $160 sensor before I tossed it. Nice job on educating us!
Glad you liked the video Johnny! Be sure to look over my video playlists below for many other videos of interest to you, and most importantly take one minute to share a link to my channel with others on social networking sites. Thank you
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Brilliant video, sir! I love science-project style presentation for learning. Much better than a white board or lecture.
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brilliant video I'm an electrician my self but I needn't to be as the way you talk through it was so understandable.
Thanks for the education, especially the difference between brands and a new faulty O2 sensor.
Great video, I'm just getting into fuel injected bikes and this helped me a lot!
Best explanation and proof of concept that i've seen on youtube.
Glad to hear that! I have many videos explained just as well on my channel. Be sure to look over my extensive video playlists below for many other videos of interest to you, use supplied Amazon links to support my channel when making purchases(No added cost to you), and share links to my videos with many others on social networking sites. Thanks
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The best video to understand O2 sensor... Thanks a lottttttt for ur efforts and time and the knowledge u share with us...🙌🏽🙌🏽🙌🏽... Thanks once again
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AWESOME video, it was like a breath of fresh 'AIR' (esp with the oxygen test ) 🙂, Thanks for sharing, and please do more video's .
Great vid and methods explained very clearly.
Made me think about using the oxygen from the oxy/acc bottles in the shop, and feed it in with the torch head on a lid.
Glad you liked the video Jo! Be sure to look over my extensive video playlists below for many other videos of interest to you, use supplied Amazon links to support my channel when making purchases(No added cost to you), and share links to my videos with many others on social networking sites. Thank you, and stay safe!
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@@electronicsNmore Professional mechanic and used to diagnosing these on the vehicle running and going by how fast they change readings but ever since got into removing them and cleaning in the sonic cleaner never really had a method to verify the heating circuit usually just cleaned them installed them and see if it fixed it.. with these sensors costing up to $200 these days and aftermarket ones utter shite been in the habit of cleaning the oem ones because to many times if you replace one you have to replace the other as well because mixing brands can get trouble codes when both parts are working they just have different value ranges.
Thanks for taking the time interesting
Great video. It would be nice if you could time stamp the parts of the video in the description so we can come back and skip to the testing procedure or other sections for reference.
Thank you! No problem. I'll add the testing time stamps to the video description area soon. Please share.
Appreciated! Will do.
Very nice video. Everything was explained perfectly.
Very good explanation and root causes finding ideas
Thanks Irene
Thanks for the time you spent making the video.
I do have questions if you can help further: On my 2008 Kia Rondo I am dealing with OBD code for the downstream sensor that seems to not respond to O2 variations. So I purchased two sensors just to verify what a good sensor should show on test bench. Bosch 15320 and NTK 25183. The NTK is lot more money but it is OEM. I wanted to test them as you explained. Temp at the outer casing on the tip was around 360 - 400F during test. The way I do it is slightly different. I start with sensor in the jar with candle lit in jar. I place a lid over the jar and wait until the flame is gone. Then I check voltage: NTK sensor shows - 8.5 mv. I removed rapidly the sensor from the jar to see the reaction when exposed to ambient air: The voltage quickly went to -14.5 mv. Notice the polarity reading is negative. I did pay attention to connecting the voltmeter + probe to the black wire which is supposed to be signal wire on this sensor. I thought that signal would be considered the positive side, correct?
Also notice the voltage going from 8.5 to 13.5 when O2 level increases. This is contrary to what you experienced in your test and I think contrary to what the sensor does in a car. In a car the sensor voltage decreases when the O2 increases. I wonder about whether I have the wrong sensors or it is simply the nature of this simple test. b The Bosch sensor reacted in the same manner with -10.6 mv without O2 and - 17 mv in ambient air.
Any reply to my comment would be much appreciated.
Thanks
Richard
Great video and demonstration!
Glad you liked it! Check out my "Automotive & Mechanical" video playlist below and share. Thank you!
ua-cam.com/video/hnd7P7O_vEQ/v-deo.html
Good information
Thanks Sir
Hi Doug. Thank you for another very useful how to. Liked,Shared and added to Playlists.
All my best.
Bobby
Thanks Bobby! Your recent donation to my channel was greatly appreciated! :-)
Thanks alot it work on my Honda stream big up jamaica one love
I never even imagined that testing an O2 sensor could be so romantic.
LOL
This Is The Best Explanation Video That I Found... Thanks Buddy... This Is A Great Information!!!
👍👍👍
Glad you enjoyed the video!
You are THE man!
Glad you enjoyed the video Ivan! I have many excellent videos on my channel, so be sure to look over my extensive video playlists for other videos of interest to you, rate thumbs up, and most importantly share my channel with others. Thank you
this video is very helpful but you need to show viewers were you connected your terminals to the battery and test meter
Brilliant video!
Wouldn't the o2 be replaced as soon as you took the plate off the jar?
wow, it is so good video. Would you do a video to test a 6 wire oxygen sensor. Thanks
Very clear example...thanks
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Super nice test!!! Congrats and thanks!!!
But does lambda sensor "smell" oxygen difference between top holes (exhaust) and opposite (outside, ambient), close from bolt head holes ?
All detection takes place inside the exhaust system.
@electronicsNmore If the sensor is plugged into the vehicle harness *but not the cat* and key switch is turned to the on position (getting 12V from) should the sensor heat up?
Thank you . sir .❤
Great demonstration Thanks
What's the relationship between the oxygen level and the air/fuel ratio?
What about A/F sensors, the ones with 5 wire? I like to see you test one.
Haven't tested those, but I may have to. Thanks for watching!
Great video.
Thank you so much for your useful video
Very good video -
Thanks Pete!
Quite ingenious, thank you for that.
Glad you enjoyed the video! I have many great videos on my channel covering many different subjects, so be sure to look over my extensive video playlists for other videos of interest to you and most importantly share. Thanks
Very informative, thank you
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Thanks .very practical✌️
Glad it was helpful!
Is that a upper or lower? They are different.
Thanks great video !
Glad you liked it!
What the difference between heated and non heated oxygen sensor?
Good info!
Thanks Steve! I had a lot of very helpful info in this video, far more than most on YT.
good test .. Because in most cases the sensor is OK, and the problem lies somewhere else .. Injectors are dripping / fuel pressure too low / incorrect air in the intake area / ignition system defective.
Well explained
If you only have a 3 wire O2 sensor. to test voltage , do you hook up the two white wires ,then one to the black then the last one do you touch the body of the O2 sensor for ground... cheers
To drive the Oxygen sensor to his maximum voltage, you can mount the sensor in a piece of metal tube, and pull this tube it vacuum.
This only works offcourse if you have a electrical heated oxygen sensor.
The voltage is created by the internal capsule which contains pure oxygen on the inside, and the less oxygen on the outside of this capsule, the more voltage difference is created by the in and outside of this capsule.
love it! THANKS
Glad you like it!
Good video. Rewatched. Any concern (ever) with voltage reading in millivolts? 5 millivolts- for example- is 0.005 volts. Proper reading range to be between (0-1v). I do understand this test shows viability and quick response.........but Id think the voltage would be higher. What am I missing? Maybe not entirely not enough? Combustion gas would have far less oxygen - somehow? Please advise. Thanks!
I tested my O2 sensor and it showed stable 4 mV (0.004 V) in room air. I tested it other way around, I blow the air to the sensor to get more oxygen to see if there are fluctuations, and voltage dropped to 1 mV, which is consistent behaviour.
Great
Sir , my honda jazz ivtec has P0420 code , i tested the O2 sensor by this method and results was
Heater is working,
After heating the reading was around 5.5 at normal atmospheric condition , when introduced to a bottle of smoke ( as shown in the video ) it has decreased to around 1.8 , when i turned off the heater value increased to about 15 and again fall back to 0 slowly
I had put the multimeter to 200mV position
And change in the values was very quick
if you are going to test the heater between the terminal and the o2s body ground doesn't it needs to be installed to read ground?
Nice job
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Lovely video.. thanks
Thanks for watching Mitch! Be sure to look over my "Auto & Mechanical" video playlist below for other videos of interest to you, and most importantly share my channel with many others.
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It's cleaner and more efficient to do this test with a propane torch
Hey, so does this mean, if i disconnect oxgen sensor from car and test it with multimeter, even if it shows a response, the oxgen sensor could still be faulty because its not getting tested and required heat temperature ??
Im getting a p0420 code , after fitting brand new approved cat after couple weeks, scratching my head, as checked the 02 sensors disconnected and they show a response, they aint at zero.
When i clear the code, it comes back on after along drive. Thanks
How does it produce voltage?
I had to cut my old 02 sensor wire and wire to new one cuz the new 02 sensor it was too short it should still work right long as wires connecter back together?
my 02 sensor has 2 whites white does it matter when connected or are they both heater wires and dont matter which way round connected
Thenk you.
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Really well done we went into more detail then my automotive instructor lol I do alot of automotive electrical on my channel too you might get a kick out of it 🍻
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@@electronicsNmore I already took a peak lol
Very useful
That looks like a lower but to what car model? 😮
That’s pretty cool
A propane torch should also clean it from build up carbon ?
Hi. The info at the start said approx 0.1-0.9v should be expected, but the meter showed 1milli-volt (- 100-times smaller)? I don't understand?
My guess is that it is still not as hot as would be required to be displaying values in the 0.1v to 0.9V range. Just my guess at this point. Perhaps someone with more knowledge can chime in.
Where did you get pure o2 for the test. Do not heat the sensor like the pre view shows as the soot from the candle may clog the o2 sensor.
Home Depot or Lowes. Oxygen cylinder for brazing/welding. Thanks for watching!
Thought Black wire is always ground and grey is sensor monitor 😊
how do you know which is signal wire
i got a P013C code for a "slow response" of the oxygen sensor. i suppose i need to change it?
List of causes below:
www.autocodes.com/p013c.html
Hopefully you just have a faulty O2 sensor. Thanks for watching!
@@electronicsNmore thank you!
Is ok but I don't know if is hook up in the battery n mybwuestio is how to test it in inside your house n others UA-cam said use oms
I'm trying to trouble shoot my tacoma 2000 and was wondering what happens to my truck if the black and gray doesn't work(which is what i'm reading with my multimeter)? Right now it's have a rough idle but runs fine when driving. But since it's an old truck, i'm leaning to an air leak that I cannot find. I'm asking because people always have trouble shooting videos on detecting bad sensors, but not the impact of a dead sensor on ECU. Since it's dead, how does the ECU compensate for it since there is no signal going to it from the 02 sensors? Does it run tell the computer to run lean?
you can just put the sensor on the candle fire, it should be 0.8V= 800mV， 5mV can be ignore.
Why does it go negative? shouldn't it be zero?
This sensor looks like an A/F sensor because of the readings is too low.
I know that the O2 sensor readings fluctuate between 100 - 900 mV.
Or i missing something 🤔
You missed something. :-)
@toolman talal wtf isn’t A/F sensor just another name for oxygen sensor??
@@619guy202 you are correct. The cheap ones, about $15 to $18, are often the single wire none heated wide band sensors. The expensive A/F guage and sensor kits are often a 4 wire heated narrow band sensor that can give far more accurate readings. While the wide band is literaly that. They flucate largely and an average reading is used. A verry budget model guage you will see this fast flucation while cruusing as the A/F is rapidly adjusted continously. A mid range model will have a buffer circut to average out the reading, the ecm still has to adjust the A/F rapidly to account for the average reading of the single wire O2 sensors. The narrow band sensors allow the ecm to more accurately adjust the A/F and a steady value will be observed. As it provides a more accurate reading in the first place. As the old saying goes garbage in garbage out. All though depending on your purpose a mid range or budget model can suit your purpose at a lower initial and life time maintance costs. Performance needs would all ways fall towards the more expensive and more accurate models. As the high end narrow band sensors can cost several hundred US dollars.
@William Allen yes now bow down to me
Do o2 sensors have a relay in a 2000 dodge dakota 2.5
If they use an internal heater, then most likely.
i have a mitshubishi endeavor 2004 i just replace bank 1 sensor 1 and im still getting check engine light saying bank1 sensor 1 is bad and the sensor is good what else can i check
Check wire harness to the sensor, A faulty MAF can also cause problems. Watch my MAF video below. Thanks!
ua-cam.com/video/vPwHiPNYn0o/v-deo.html
In my experience O2 sensor often is the problem.
I'd say 50/50. I've seen many people replace O2 sensors to end up with the same codes or new O2 codes because the MAF was faulty, female O2 wire harness had poor connections, or other engine problems.
Why cant you test single wire sensor
This doesn't work with all sensors..it's been tried and with a brand new Denson sensor. only if you put the flame of the lighter, then the voltage jumps. when the heating element is on.
Said .1-1.0 volt range but it's only millivolts, go re-figure that!
Where is the map sensor
Salut juste une demande la traduction en français peut nous aider
Where is the oxygen heater
DO you have patreon?
I got rid of it, it was a big waste of time for me. Some channels do very well with it, many others don't. I now use the Paypal link provided in the video description area for channel donations. Thanks for watching!
Oxygen heater
fyi O2 sensors DO NOT sense oxygen at all. It senses exhaust heat only, that generates a low voltage that the ecm interprets if the current ratio is correct or not, hints open loop learning mode. To which adjustments can be made to achieve the correct ratio. A bad O2 or MAF sensor will cause your car into closed loop with factory set fuel values to prevent engine damage but will result in slightly to bad fuel mileage.
Wrong. LOL
Everybody is a damn mechanic
You talking so much just 1 sensor test bro
you must be in a banana republic the real world uses centigrade
You must be a loser with nothing better to do.
Best off to clean all the sensors in a vehicle and test them all off the vehicle because if you replace just one it will not have carbon build up and give different readings that will trip a code so best to clean them all so if you replace one sensor the others will be clean and operate in the same range .. just like fuel injectors if you replace just one and rest are dirty and gummed up the engine is going to run poorly and possibly out of balance. clean them all replace the bad one with a new oem one or cheaper yet get one or 2 from a salvage yard really cheap and clean them and have a spare and possibly less then $20 versus $100 plus for an oem injector.. news flash cheap injectors from e bay are made in china garbage and part store one not much better.
Ill pass on HF wires
What do you mean?
electronicsNmore
Harbor Freight wires
@@sirsweetness8332 Thanks, I was wondering what he was talking about.
Nothing wrong with using Harbor Freight jumpers for this sort of application. There are no high voltages present. Quite honestly, if you buy these from Mouser, Digi-Key or other "reputable" electronics suppliers you will most likely receive the exact same jumpers made in the exact same Chinese factory, but pay more money for them.
Fake? The Heater signal is pwm. You just put the sensor in 100% duty cicle for too long. You should use maybe a 6v battery for the vídeo become less fake. What the hell is 5v (no O2) and 12v (O2) signal in a O2 sensor? What is the make and model of the sensor and of the cars it fit?
I you like fake videos, I suggest you find another channel to watch. Learn to post polite comments, if you expect polite replies.
State and explain a comment instead of some vage rude comment