OBD II fault code P00FF is a generic trouble code that is defined as, "Body Control Module Requested MIL Illumination", and is set when the BCM (Body Control Module) and/or PCM (Powertrain Control Module) detects a problem, defect, malfunction, or failure in the auxiliary air system, which forms part of the larger Fuel and Air Metering System that it cannot identify directly.. 10. How often does OBDII code P00FF GMC occur in GMC vehicles? - OBDII code P00FF GMC (Body Control Module Requested MIL Illumination) is a relatively rare code specific to GMC vehicles, and its occurrence may vary depending on the model and year of the vehicle. 1. What are the common symptoms of OBDII code P00FF in a GMC vehicle?
What Does the Engine Code P00FF Mean? Character "P" in the first position of Diagnostic Trouble Code (DTC) represents the powertrain system (engine and transmission), "0" in the second position means that this is a generic OBD-II (OBD2) DTC. "0" in the third character position in a DTC indicates that the fuel and air metering and auxiliary emission controls is experiencing a malfunction.. P00FF is just an informational code. It means some other fault in the ECM, or another module entirely, asked the ECM to turn the light on. It'd be worth putting a generic OBD2 reader on it to see if there are other codes in the ECM. If the fault is somewhere else in the car, you won't be able to see it without specialized tools.