What are the reasons for the engine malfunction light in a van?
2 Answers
The reasons for the engine malfunction light in a van are: 1. Sensor damage, poor contact, or signal interruption; 2. Poor engine maintenance; 3. Poor quality fuel and oil; 4. Incomplete combustion of the air-fuel mixture; 5. Faulty spark plugs or ignition coils; 6. Fuel pump failure or clogged fuel lines; 7. Clogged air conditioning filter. The solutions for the engine malfunction light in a van are: 1. Use fuel additives to clean the entire fuel system; 2. After performing an engine cleaning, use higher-grade gasoline; 3. Use high-quality fuel additives to improve the cleanliness level of the fuel; 4. Replace the catalytic converter.
I've encountered quite a few cases of van engine warning lights coming on in repair shops. This is usually triggered when the vehicle's computer detects an abnormality. The most common cause is a faulty oxygen sensor, which monitors oxygen levels in the exhaust. Once the data becomes inaccurate, emissions exceed standards, fuel consumption increases, and the light comes on. Worn spark plugs or ignition coils can also cause misfires, making the engine run roughly and affecting performance. Fuel system issues like clogged injectors or low fuel pump pressure can create uneven fuel mixture, similarly triggering the light. Don't forget to check the catalytic converter - if it's clogged and exhaust flow is restricted, the signals get confused and the light stays on. I recommend immediately using an OBD2 scanner to read the trouble codes. Spending a few dozen yuan on a basic tool can provide preliminary diagnosis, preventing minor issues from becoming major repairs. Paying attention to fuel quality and regular maintenance can effectively prevent such warning light issues.
