The engine control module (ECM), also known as the powertrain control module (PCM) or engine control unit (ECU), is a critical component in modern vehicles.
It is essentially the brain of the vehicle, responsible for monitoring and controlling various aspects of the engine’s operation to ensure optimal performance, fuel efficiency, and emissions compliance. The ECM gathers data from various sensors throughout the vehicle, such as the oxygen sensor, mass airflow sensor, and throttle position sensor, to determine the ideal air-to-fuel …
