The engine control module (ECM), also known as the powertrain control module (PCM) or engine control unit (ECU), is a crucial component in modern vehicles responsible for managing the operation of the engine and other powertrain systems.
This small but powerful computer is essentially the brain of the vehicle, constantly monitoring and adjusting various parameters to ensure optimal performance, fuel efficiency, and emissions control. The ECM collects data from various sensors throughout the vehicle, such as the oxygen sensor, mass airflow sensor, throttle position sensor, and many others. This data is used …
