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Home >> Buick >> 2012 >> Regal Base >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Controls/Fuel - 2.4L - Description And Operation >> Description and Operation >> Engine Control Module Description >> Malfunction Indicator Lamp (MIL)

Malfunction Indicator Lamp (MIL)

The malfunction indicator lamp (MIL) is inside the instrument panel cluster (IPC). The MIL is controlled by the ECM and illuminates when the ECM detects a condition that affects vehicle emissions.