Schuie
Junior Member
I am getting frustrated with my Cummins, 2019, 3500, crew cab, long bed, 19,800 miles. First it went into derating and I limped it to the dealer, 4 months later, it went into derating again and I limped it back home with my camper. Turns out it was the EGR valve (two weeks ago.) Now it shows PC24C9, witch is the "Particulate Mater Sensor Temperature Circuit High". For those of you chasing DEF system issues, is this a long term problem? I pull two campers nearly every weekend for my RV rental Business.
