electronic control unit
ECM, (Engine Control Module, Electronic Control Module) PCM, (Powertrain Control Module, Power Control Module) ECU, (Engine Control Unit, Electronic Control Unit).
It's 'electronic control module', and the one for the engine will be one of the computers on the vehicle.
GAS OR DIESEL?
It is on because the engine computer has detected a malfunction with the electronic throttle control system.
Engine control module, or electronic control module
Engine control unit or electronic control unit.
It advances and retards the engine timing as needed.
If the EPC light came on in a Polo and there is smoke coming out of the engine, there is a problem with an electrical circuit somewhere. EPC stands for Electronic Power Control. Perhaps an electronic sensor on the motor shorted out. It is also possible that the entire fuse panel inside the engine compartment has shorted out.
Depending on the type of engine; A man shovelling coal The carburettor Fuel injection pump Injectors Electronic control unit.
Most likely the problem is with the Pressure Sensor in the engine block.
Virtually every brake part, every engine and engine control part and a central computer program are involved in this system.
ECM can stand for Electronic Control Module, or Engine Control Module. A 2000 Oldsmobile Bravada uses a VCM (Vehicle Control Module) which controls the Engine and Transmission. VCM's are commonly referred to as PCM's (Powertrain Control Modules), or ECM's (Engine Control Modules)