![]() ![]() However, the engine control module does not always recognize a faulty MAF sensor, so it may still be defective even if there is no engine light on your dashboard. Therefore is a check engine light one of the most common bad mass air flow sensor symptoms. Therefore, if your MAF sensor is faulty and sends wrong information to the engine control unit – the check engine light will illuminate your dashboard. ![]() If a sensor sends an incorrect signal, the ECM or PCM will turn on the check engine indicator light. ![]() The engine control module monitors all sensors in the car engine to ensure that everything is OK. ![]()
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