Understanding the role of these vital components in your vehicle's powertrain control system is crucial for proper maintenance and efficient operation. In this comprehensive guide, we will delve into the differences between ECU, PCM, and ECM, and provide you with valuable insights to help you navigate and troubleshoot any related issues effectively. Sensors: The ECU collects data from sensors like the oxygen sensor, mass airflow sensor, and throttle position sensor to monitor the engine's con...