What are the reasons for the car engine malfunction light to come on?

[OTheo]

Car engine malfunction light comes on due to: 1. Oxygen sensor failure; 2. Poor engine maintenance; 3. Use of inferior fuel; 4. Poor combustion of air-fuel mixture; 5. Dirty air filter; 6. Air flow sensor failure; 7. Spark plug carbon buildup; 8. Damaged coolant temperature sensor; 9. Engine misfire. An engine is a machine that converts other forms of energy into mechanical energy, applicable both as a power generator and as the entire machine including the power unit. According to its working principle, it is divided into: 1. External combustion engine: Fuel burns outside the engine; 2. Internal combustion engine: Fuel burns inside the engine.