Discussion Starter · #1 ·
My trip computer compas has gone haywire...shows calibrating most of the time, and when it doesn't, the direction is way off. I haven't really thought about it much. When pulling codes for a transmission problem, I also got a B1342 "ECU Fault" code and a U2016 "Signal to Ground" code. Are these related to each other and/or to the overhead display/trip computer? What are the most likely fixes? And a more basic question...what is the ECU? Environmental Control Unit? Engine Control Unit? Emissions COntrol Unit? Something else completely different? I thought the "Engine Control Unit" on these trucks was called a PCM (Power Control Module)...