Kenworth limp mode def level sensor failure

Kenworth def level sensor replacement
Tools Needed:
• ratchet or electric/air
• 16mm socket and wrench
• 17mm socket
• Channel Locks
• Pick set
• Needle Nose
• Flat Head Screw Driver
• Torq Bits T30
• Crescent Wrench
Part Number:
Def sensor - 021-6170 - 003K1T
O Ring - M42 - 600PPD

[@Alex-h2n1q]

THANK YOU FOR THIS VIDEO EXTREMLY HELPFUL!!

[@oscarsegovia6083]

Have a same problem but i ready replace 2 diferent sensors brand new from the dealer but the gauge starts fluctuating up and down and the truck goes to derate mode cause of the computer not reading the def level

[@adrianluna6431]

Thanks for videos I'm having same issues with my 2020 kenworth t680

[@MikeCalizo]

Just wanted to say thank you very much 😊

[@john10872]

My apologies, but u definitely need another person running the camera and preferably a microphone cuz couldn't hear half of what u were saying and got motion sickness from watching the video.

[@MikeCalizo]

Tyvm 🙏

[@jonathanlaracuente5650]

I did my today bot wont star 🤦‍♂️ now

[@Annavargos]

Thanks!

[@big_boss4ever968]

I am having the problem right now.

[@mudpuddle8805]

This sensor is $450 for the part alone and I have replaced mine twice.

[@smartmotives]

If the DEF is too concentrated and too much urea is present, the heat from the machine can turn it into ammonia. The ammonia would go on to burn and deteriorate not only the DEF header, but the entire machine. To prevent the creation of ammonia, you should test the concentration of urea in your DEF using a refractometer.

[@MichaelHooten85]

My def gauge dropped to zero after driving through a bad thunderstorm. 1761:9 3031:9 seems like the same thing and maybe the temp sensor. Would you agree?

[@fernandocanela]

I truly appreciate your video, you saved me a ton of money. Thank you so very much!

[@kinglevo1369]

Thank you.

[@jonj9169]

Great vid! I’m starting to have trouble with mine and thinking about changing it myself.

[@hammbone1612]

Thanks for the video. You got a new subscriber

[@bohuayang1817]

KW2016 Why is the DEF light on, but the car cannot start?

[@retailstore-wk9vz]

Your awesome 👌

[@СашкаСашкин-ъ5в]

I disabled this system through the bump, the level Def always shows full, the car drives great.

[@robertomartinez430]

I need..I have one 2018 ..is posible you tell me where..I lived in Miami fl

[@СашкаСашкин-ъ5в]

@@robertomartinez430 I live in Georgia, I moved from Miami half a year ago.)

[@СашкаСашкин-ъ5в]

@@robertomartinez430 UA-cam doesn't allow you to leave your contact info here. For $1300 I will save you the agony of the DPF system

[@victorhugoayala2717]

@@СашкаСашкин-ъ5вamigo tengo el mismo problema con el def, vivo en Georgia como te puedo contactar por favor

[@hammbone1612]

Thanks for your time

[@antwonewilkes8831]

I have a Peterbilt 579 showing the same limp mode. I believe it’s causing my truck not to start what do I do?

[@smartmotives]

In limp mode that means you have an after treatment problem, you can get your code read to see what the actual problem is, your truck can go into limp mode for other multiple reasons.

[@averyjohnson675]

One of a kind! 😘

[@dannyperera696]

Hey I have a truck DD15 with the same issue and i changed the header and no change

[@smartmotives]

Just to keep it simple first have you checked voltage coming from harness which plugs into the header? I ensure there's no breaks in the wires, another thing I will check also resistance. Also are you able to pull codes?

[@yesh6640]

How do I contact you directly?

[@JNRLLC-ep1uv]

Hey great video I changed the sensor but still having the same issue

[@julioosilia]

What you did in the end?

[@beza-belbizani618]

Helpful video nice work!

[@TheRdeanpeek]

good job...

[@mikey9094]

Good job!!

[@runganomacharaga3261]

Good job girl

[@Abe_sudays]

Great tutorial

[@TheRdeanpeek]

it doesn't need the Regen, if it did it would run the program...

[@JNRLLC-ep1uv]

I changed my sensor and still have the same issue

[@Elmegadivo013]

@@JNRLLC-ep1uv did you fix it ?

[@daianaxi1295]

the way everything is just laying there 🤣💀

[@smartmotives]

lol what do you mean?

[@Abe_sudays]

I bet you do 30% of what she did

[@cravorkiancarson9412]

Was your truck going 5 miles?

[@smartmotives]

Yes, just about so

[@cravorkiancarson9412]

@@smartmotives mines doing the same but I’m not sure what’s the problem

[@cravorkiancarson9412]

How did you know it was that sensor

[@smartmotives]

@@cravorkiancarson9412 Code read on Cummins insite, verified the problem due to the gauge reading incorrectly with a half full tank.

[@smartmotives]

Half full of DEF fluid.

[@Annavargos]

This is soo helpful you did effortlessly.