What are the reasons for the car engine malfunction indicator light to illuminate?

1 Answers
Dawson
07/30/25 4:47am
Car engine malfunction indicator light illuminates due to: 1. Poor gasoline quality leading to incomplete combustion of the air-fuel mixture in the cylinder, resulting in carbon deposits; 2. Excessive engine mileage causing weakened spark plug performance; 3. Aging or damage to vehicle mechanical components; 4. Faults in the sensor or computer board. Hazards of the engine malfunction light being on: 1. Degradation in exhaust gas quality, increasing environmental pollution; 2. Elevated combustion chamber temperature and accelerated wear, leading to engine damage; 3. Potential for the engine to burn oil; 4. Increased engine noise, affecting driving and passenger comfort. The function of the engine is to convert the thermal energy of gasoline into mechanical energy by expanding gases after combustion in a sealed cylinder, thereby driving the piston to perform work.
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