Search results

2 drive cycles, all good. Now DEF gauge just dropped back to zero and CEL is on. Not seeing the restricted mileage message, wondering how likely that is to appear. Supposed to head to the mountains tomorrow.

Popped the injector to confirm no crystallization. I think I just need the gasket. Is this pump cover gap normal?

Very helpful info, thank you. I've only put 500 miles on the truck so DEF level has not been below half full for me. I will see about draining a little to create an air gap.

Update: thanks for the replies. I put it on a trickle charger overnight, started it this morning, DEF still zero, CEL on. After a few minutes at idle the DEF gauge came alive, went back to 3/4 full where it was before, then slowly climbed to full which is correct. OBD showed P203B which I...

First post - appreciate any help. Bought 5 days ago with 18,000 miles. 300 freeway miles home, ran great. Regen cleared DPF from 30% to zero. DEF gauge read just over 3/4 and appeared to be very slowly coming down. All seemed good. Today I have check engine light and DEF gauge reads zero...