How to Troubleshoot When the Engine Fault Light Comes On?
3 Answers
When the engine fault light comes on, it indicates the following situations: a yellow symbol light indicates a fault in the engine; a red symbol light indicates a serious fault in the engine. Here is more information about the engine fault light: 1. Elimination method: Simply remove the fuse. 2. Solutions for when the engine fault light comes on: (1) Clean the engine: Once the engine fault light comes on, the owner should promptly clean the carbon deposits in the engine. (2) Improve fuel quality. (3) Use higher-grade gasoline: After cleaning the engine, the owner can choose to use 95 or 97 octane gasoline.
Last time my car's engine warning light suddenly came on, it really freaked me out, so I quickly pulled over to check. First, I tried tightening the fuel cap—sometimes a loose fuel cap can trigger the alarm. If the light was still on, I would drive the car to a nearby repair shop to read the fault codes. In most cases, it's just a dirty sensor or a poor connection, and cleaning or reconnecting the plug will fix it. If the fault code shows serious issues like a knock sensor or a failed catalytic converter, then it needs proper repairs. Never drive long distances with the warning light on, as it can turn a minor issue into a major problem.
I've dealt with the engine malfunction light coming on several times. First, find a place with an OBD scanner to read the fault codes - for example, Volkswagen cars often show P0171 which usually indicates excessive carbon buildup. Don't try to save money by using low-quality fuel when refueling, and timely oil changes are crucial. If you notice power loss combined with severe shaking while driving, stop immediately and call a tow truck. A friend of mine kept driving despite these symptoms and ended up with cylinder scoring, costing over 8,000 yuan for major repairs.