Choupique
Senior Member
Hey yall,
2018 ram 2500 diesel
I am getting P203B - reductant Level circuit. It's ******* me off. The truck is saying add def, XX miles to limp mode. It is definitely full, was half full when it threw the code and is now totally full. Reading 100% DEF level on my scanguage. It reads right for about 20 seconds when I clear the code, and then needle goes back to empty and message pops back up.
I've drained, filled with fresh DEF. Quality sensor is working (shows 31%) Level gauge is working, I can hear it pumping it's little butt off. Everything is working but this damn code won't go away. It shows as "permanent" in the OBDlink app, and no active faults shown.
I tried searching for a TSB but don't see one for my model year that seems relevant.
Any ideas that don't involve going to the dealership?
2018 ram 2500 diesel
I am getting P203B - reductant Level circuit. It's ******* me off. The truck is saying add def, XX miles to limp mode. It is definitely full, was half full when it threw the code and is now totally full. Reading 100% DEF level on my scanguage. It reads right for about 20 seconds when I clear the code, and then needle goes back to empty and message pops back up.
I've drained, filled with fresh DEF. Quality sensor is working (shows 31%) Level gauge is working, I can hear it pumping it's little butt off. Everything is working but this damn code won't go away. It shows as "permanent" in the OBDlink app, and no active faults shown.
I tried searching for a TSB but don't see one for my model year that seems relevant.
Any ideas that don't involve going to the dealership?
