DTC P0602
 

I have this code displayed on the odometer but none of the code readers can find a code. Just wondering if this code could come up if someone has reprogrammed the ECM before I purchased the truck and it is a code that can only be cleared by the dealership because it is a way for them to know if the truck has been tuned.

Truck runs fine once it is started. Will only start with starting fluid when cold and I have a feeling that is an injector issue although I have heard this code will create a hard starting problem also.

Any information is greatly appreciated.

Thank you

Randy