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

[@jonj9169]

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

[@beza-belbizani618]

Helpful video nice work!

[@adrianluna6431]

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

[@Abe_sudays]

Great tutorial

[@averyjohnson675]

One of a kind! 😘

[@MichaelHootenFamilyTravel]

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?

[@Annavargos]

This is soo helpful you did effortlessly.

[@JNRLLC-ep1uv]

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

[@retailstore-wk9vz]

Your awesome 👌

[@mikey9094]

Good job!!

[@kinglevo1369]

Thank you.

[@bohuayang1817]

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

[@runganomacharaga3261]

Good job girl

[@yesh6640]

How do I contact you directly?

[@TheRdeanpeek]

good job...

[@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

[@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.

[@user-oc8se3tx4l]

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

[@user-oc8se3tx4l]

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

[@user-oc8se3tx4l]

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

[@victorhugoayala2717]

@@user-oc8se3tx4lamigo tengo el mismo problema con el def, vivo en Georgia como te puedo contactar por favor

[@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?

[@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

[@big_boss4ever968]

I am having the problem right now.

[@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.

[@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.

[@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