Check Engine Light Turns OnĪn illuminated Check Engine Light is one possible symptom of a problem with the ECM.
A bad or failing ECM may produce any of the following 5 symptoms to alert the driver of a potential problem. When the ECM has any issues, it can cause all sorts of problems with the vehicle, and in some cases even render it undrivable. The ECM plays a crucial role in newer vehicles, where many of the essential functions of the car are controlled by the ECM. The ECM takes the information from the engine's various sensors and uses that information to calculate and tune engine spark and fuel for maximum power and efficiency. It essentially functions as the main computer for many of the vehicle’s engine performance and drivability functions. The engine control module (ECM), also commonly referred to as the engine control unit (ECU) or powertrain control module (PCM), is one of the most important components found on virtually all modern vehicles.
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