engine code 2004.5 Ram 2500 Cummins shows P480 and P243
2004 Dodge Ram 2500 Cummins diesel
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.
ASE master technician Level 4 Chrysler training and 20 yrs exp. repairing vehicles