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Jerry
Jerry, Master Mechanic
Category: Dodge
Satisfied Customers: 1753
Experience:  ASE Master tech, 30 years exp. troubleshooter, driveability tech
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I have a 2015 cummins with 20k miles. The service def system

Customer Question

I have a 2015 cummins with 20k miles. The service def system code came on 3 weeks ago and the dealer took care of it. It came on again 2 days ago. The first time it came on I was near the end of a*****trip and hauling a trailer with exhaust break on and in tow/haul mode and I was doing the same thing the 2nd time it came on. Any way I can fix this without going to the dealer?
Submitted: 10 months ago.
Category: Dodge
Expert:  roy replied 10 months ago.

good evening my name is ***** ***** I will assist

do you know the code that was set??? we need this.

what was done in previous repair??

Roy

Customer: replied 10 months ago.
5 mph max speed in 114 miles
Service def system
See dealer
Customer: replied 10 months ago.
Previous repair they flashed the computer if I remember correctly
Expert:  roy replied 10 months ago.

ok, so it de rated to 5 mph

did you try a manual re gen???

Roy

Customer: replied 10 months ago.
What is manual re gen?
Expert:  roy replied 10 months ago.

cleaning of the after treatment system of soot. this is what happens with high soot levels.

Roy

Customer: replied 10 months ago.
I can give it a shot, hopefully it's not too involved, I'm a plumber not a mechanic...ha
Any tips on where to find line and steps to take to clean?
Expert:  roy replied 10 months ago.

check your owners manual. it is not hard to start. the truck does the rest

Roy