DPF full light is stuck on

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by markk, Jan 31, 2023.

Jan 31, 2023 #1

markk Medium Load Member

566

195

Nov 14, 2011

0

2017 Pete 579 mx13 epa13.
After temp went down to about 20 degrees it started.
I had my bunk heater running as usual for the weekend to keep things in truck warm.
Started it up Monday and the dog full light was on. Does not allow Regen do just a malfunction somewhere.
Been idling a lot yesterday and this morning. So when I started it I hit Regen and it did Regen but only for a few minutes. Light stuck on still.
It is using a lot of def. Something it does also when dpf pressure sensor goes bad.
Maybe some frozen moisture in sensor ?

markk, Jan 31, 2023

markk, Jan 31, 2023

#1
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