How to Reset the Engine Malfunction Light?

[DeCameron]

The methods to reset the engine malfunction light are: 1. Visit a 4S shop or auto repair shop to use a fault code reader for troubleshooting; 2. Disconnect the negative terminal of the battery to clear the fault codes. The reasons for the engine malfunction light illuminating include: 1. Poor gasoline quality leading to incomplete combustion of the air-fuel mixture in the cylinders, resulting in carbon deposits; 2. Excessive mileage causing weakened spark plug performance; 3. Aging vehicle components; 4. Damaged, poorly connected, or interrupted signals from sensors such as coolant temperature, crankshaft position, air flow, intake temperature, and oxygen sensors. Solutions for the engine malfunction light include: 1. Promptly inspect the engine's condition; 2. Check the status of sensors, air flow sensors, and spark plugs; 3. Check for engine knocking; 4. Inspect the ignition coils for faults; 5. Clean carbon deposits from the engine.