This P0928 Code is found in the car engine for checking the car engine. You need to solve the car engine problem sooner. If you are unable to solve the car engineer, then better allow an automobile engineer to solve the car engine problem. The general or automobile dictionary meaning of the car engine code is p for Powertrain Code Problem is related engine, transmission and emissions systems. 0 for SAE – Generic. 9 for Fuel And Air Metering (Injector Circuit Malfunctions Only). 2 for Air Conditioning (A/C) Clutch Feedback Circuit High Voltage and 8 for PCM Stack Overrun. A test drive is finally recommended to ensure the car engine is ok or not.