What Causes the Engine Emission Control System Warning Light to Illuminate?

1 Answers
LeElizabeth
07/29/25 11:37am
The engine emission control system warning light illuminates due to unstable engine operating conditions leading to emission system malfunctions. 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 engine oil and filter; 2. Using lubricating oil of the appropriate quality grade; 3. Periodically cleaning the radiator; 4. Regularly servicing the air filter, oil filter, and fuel filter; 5. Maintaining good crankcase ventilation with regular cleaning; 6. Periodically cleaning the fuel system.
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