engine code 2004.5 Ram 2500 Cummins shows P480 and P243
Optional Information: 2004 Dodge Ram 2500 Cummins diesel Already Tried: Code P480 and P243 just unhooked battery
The po480 is for the fan clutch and the p243 is for wastegate pressure control. I would replace the fan clutch first and erase the codes b4 going to deep into the other code. When the fan clutch goes bad it can short a reference voltage that causes alot of false codes. The fan clutch has been a common problem on the diesels.
Experience: ASE master technician Level 4 Chrysler training and 20 yrs exp. repairing vehicles