What Causes the Vehicle's Engine Malfunction Light to Illuminate?
2 Answers
Reasons for the vehicle's engine malfunction light to illuminate: 1. Poor combustion state; 2. Engine knocking; 3. Poor fuel quality; 4. Dirty engine cylinder interior with accumulated carbon deposits; 5. The computer cannot obtain engine data. Solutions for the engine malfunction light: 1. Clean the engine. Once the engine malfunction light comes on, the owner should promptly clean the engine; 2. Improve fuel quality, such as using good fuel additives to enhance the fuel's cleanliness level; 3. Use higher-grade gasoline. After engine cleaning, to maintain the engine's good working condition, the owner can choose to use 95 or 97 octane gasoline, which usually resolves the issue of the engine malfunction light illuminating.
Last time I was driving, the engine malfunction light suddenly came on, which gave me a scare. Possible causes include a damaged oxygen sensor in the exhaust system, where the sensor detects issues with exhaust emissions. If left unaddressed, the car may experience power loss and a significant increase in fuel consumption. Another common issue is aging spark plugs, which can fail to ignite properly and cause engine shaking. Clogged fuel injectors can also lead to abnormal air-fuel mixture. More seriously, the computer system may generate fault codes, such as control unit errors. A friend of mine delayed repairs, and later the catalytic converter was ruined, costing several times more to fix. In short, as soon as you see the light come on, don't hesitate—head to a 4S shop or professional repair center to scan with an OBD device as soon as possible. Early repairs mean early peace of mind, avoiding a breakdown on the road.
