ECU (Engine Control Unit): This is the brain of your car's engine management system, controlling various functions such as fuel injection, ignition timing, and emissions. PCM (Powertrain Control Module): A more advanced version of the ECU, the PCM oversees not only the engine but also the transmission, ensuring optimal performance of the powertrain. ECM (Engine Control Module): Similar to the ECU, the ECM focuses on engine-related functions, monitoring sensors and adjusting settings to maint...

The ECU, PCM, and ECM are electronic control units responsible for managing various aspects of your vehicle's operation. Each component plays a critical role in ensuring your car runs smoothly and efficiently. Here's a breakdown of what they do: Check engine light illuminates Engine misfires or rough idling Decreased fuel efficiency ...

The ECU, PCM, and ECM are electronic control units responsible for managing various aspects of your vehicle's operation. Each component plays a critical role in ensuring your car runs smoothly and efficiently. Here's a breakdown of what they do: Check engine light illuminates Engine misfires or rough idling Decreased fuel efficiency ...