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Having the same issues 🤬 Can you please sure what the problem was?

Dude my company got charged 31k for a new dpf and doc. Just replaced engine harness. Pulled hill on 70 in Maryland going into PA and threw a wrench and an engine light. My company loves wasting money

SELL IT! BUY A TRUCK WITH CAT 🐈 ENGINE INSTEAD! I SPENT $18,000 ON DEF AND LOST 6 MONTHS OF DRIVING BECAUSE PETERBILT SHOP = LAZY!

What was the problem did you get it fix ?

they can fix it but money is there God they can fix easily in NY and Nj

Probably a short

Should have definitely known better

These are a scam systems for sure....I'm glad my truck is older

I had an issue with DEF system, they replaced everything on it except the one box, and what happened was they had replaced the DEF filter (not the the big filters) the DEF fuel filter and it was a bad new filter. So they replaced it again and everything was good. But that is an issue with the DEF system mechanics don’t know much about them.

Clearing not gonna help

Going broke

After treatment is money pit

How you fix this problem bro same my truck just on DPF light

Do you have the part numbers to the other 2 wire harnesses and where are they located at on the truck

Delete

I spend over 40 k on same truck even put new engine as today what come on check engine light on 2.Stop red light.3. Stop Engine immediately. Don't Run Engine Or Damage Will Occur its been 2 yeas didn't make money Fuck how build son f bitch engineering all truck drivers we work day and night so hard losing all hard working money 💰 go to mechanic

Paccar is 12% owned by Blackwater which is part of the Bull shit Go Green deal that Biden,Communist China,Europe,and all the elite communist politicians and communist corporate America.They don’t give a rat’s ass about a trucker going bankrupt with their piece of crap DEF system failures. Best thing to do is get a scan reset tool from OTR PERFORMANCE. That way you can reset the faults and do a force regen and keep on keeping on .

I didn't see you fixed already sorry

It's a wiring issue

I would recommend it to you to get rid of it that truck and get freightliners of Volvo so Mac other different trucks international is better than international or better than than Peterbilt in Kenworth and they are garbage they're no good

Because the Peterbilt in Kingwood trucks which is a packer owner right now they are Pizza s*** it's nothing else but piece of s*** I prefer to buy Freightliner Volvo Mac other than Peterbilt Peterbilt it's not longer leader trucking heating in the United States they are piece of s*** I'm not going to purchase another Kenwood and Peterbilt no more the garbage they need to do something they need to do something they need to recall all this f****** Peterbilt or throw them away or shut down the company

I had the same problem they changed the yellow clips that holds the harness to the computer ecu as time they don’t hold the connection as well

Hey man would like to reach out to you on your 579 I have one as well and I’ve been having emissions problems. I want to see if you have resolved yours and what’s going on with it?

I'm having the same problem can't find anyone to fix it

Did you ever figure out what the problem was.

Save yourself a lot of money, go online to otr performance, buy the tool. You’re welcome.

Any updates on this?

I got 2022 got same problem 🤦‍♂️

If your warranties done you might as well delete it. I have 2 579's both deleted for over 2 years now with No issues.

I use it and I just keep moving .. in all to hell with paccar

Check with koons trucking. He is on you tube.

What did you replace to fix the problem?

Just delete dpf too much headache

I’m having the same problem with my KW T680. Paccar is aware of the problem and refuses a recall to fix it.

Hope you have the red oval warranty. I have 2 579 trucks and had to replace the def level sensor

I have 2 Peterbilt 579 trucks, 2015 & 2016 which both had the same issue…AT THE SAME TIME!! We changed all you had changed to them but was still giving us the check engine light and the derrate message. The last thing we had to changed on both trucks was the DEF Quality Sensor. That fixed the issues the trucks was giving us related to the aftertreament system. However, it was a bit hard to find this sensor due to its availability. Once we found it, it cost me less than $200 at the Peterbilt shop. If you haven’t done so, try to get it changed as well. It might help with your truck issues and codes. Good luck! Change the Def injector too if you have the done so.

What was the problem? I’m stuck in Shreveport Louisiana right now

Just delete the damn thing if it’s all about the after treatment

You replaced everything but yr truck but you should

I have a 2015 peterbilt 579 with a paccar in it. What happened to me right when I got it was the same lights you have all came on and then shut down the engine. They reason was one of the relays in the engine compartment. Replaced it and everything worked fine until I got a truck wash and a few days later all the lights came on again and turned out that water got into the fuse panel and caused corrosion. Had to replace the whole fuse panel. Have your technician check yours. Another thing to check is, when you pull out the nox sensor from the dpf housing, look into that hole, there should be a bunch of small holes. If they are all clogged up, clean them out. Clean the sensor with some seafood. Another thing to check is the egr ports, they get full of soot.

How does the truck run ? Try unplugging the computer and plugging back in . Maybe a bad ground or Something

Who the fuck cares why is this on my feed

And the point

TURN ON THE LIGHTS