The ECM is similar to the ECU in function, but may be used interchangeably depending on the manufacturer. It acts as the brain of the engine, controlling critical processes and responding to changing conditions on the road. Check Engine Light: A persistent check engine light could indicate a problem with the ECU, PCM, or ECM. Poor Performance: Decreased engine power, rough idling, or difficulty starting the vehicle may signal underlying issues. Erratic Behavior: Inconsistent fuel consumpt...

The ECM is similar to the ECU in function, but may be used interchangeably depending on the manufacturer. It acts as the brain of the engine, controlling critical processes and responding to changing conditions on the road. Check Engine Light: A persistent check engine light could indicate a problem with the ECU, PCM, or ECM. Poor Performance: Decreased engine power, rough idling, or difficulty starting the vehicle may signal underlying issues. Erratic Behavior: Inconsistent fuel consumpt...