What causes the engine malfunction light to come on and the car not to start?

[AdelynFitz]

The reasons why the engine malfunction light comes on and the car cannot start are as follows: 1. Poor quality gasoline that does not meet standards; oxygen sensor failure; air flow sensor failure; 2. Spark plug carbon buildup; engine knocking; water temperature sensor damage; engine misfire. The solutions for the engine malfunction light coming on and the car not starting are: 1. Replace with higher-grade gasoline; replace the oxygen sensor; replace the air flow sensor; 2. Clean the spark plugs; replace the engine; replace the water temperature sensor. 3. Additional information: Method to reset the engine malfunction light: Start and turn off the vehicle three times in a row.