What Causes the Engine Yellow Warning Light to Illuminate?

[LeTalia]

The reasons for the engine yellow warning light to illuminate are: 1. Poor gasoline quality; 2. Oxygen sensor malfunction; 3. Airflow sensor malfunction; 4. Spark plug carbon buildup; 5. Engine knocking; 6. Coolant temperature sensor damage; 7. Engine misfire. The function of the engine is: to convert the thermal energy of gasoline or diesel into mechanical energy by burning the fuel in a sealed cylinder, causing the gas to expand and push the piston to perform work. Engine maintenance methods include: 1. Regularly changing the oil and oil filter; 2. Using lubricating oil of appropriate quality grade; 3. Regularly cleaning the radiator; 4. Regularly servicing the air filter, oil filter, and fuel filter; 5. Maintaining good crankcase ventilation and regular cleaning; 6. Regularly cleaning the fuel system.