How to Deal with the Engine Emission Fault Light?

2 Answers
Matthew
07/24/25 1:46am
Engine exhaust system fault light on the solution is to read the fault code to confirm the fault location, and then replace the damaged parts. The reasons for the engine exhaust system fault light being on are as follows: 1. Poor quality of car gasoline: Poor fuel quality may lead to abnormal mixing ratio, electronic equipment failure, and exhaust system abnormalities. 2. Failure of electronic components in the intake system: such as oxygen sensor, carbon canister solenoid valve, throttle, engine carbon deposits. 3. The engine control program needs to be updated or debugged: If this fault light comes on during driving, and the engine power is insufficient or the engine shakes severely, you should go to the nearest repair service station to check and repair the engine.
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McMary
08/10/25 9:25pm
I've encountered this warning light coming on during long-distance drives before. The first thing is to stay calm and not panic. Check for any abnormal signs in the car, like strange engine noises or noticeable power loss. If everything seems normal, try tightening the fuel cap - sometimes it's just a simple issue caused by a loose cap. Then, find a place to borrow an OBD-II scanner to read the trouble codes. Many auto parts stores offer this service for free, which can tell you exactly what's wrong, such as an oxygen sensor failure or exhaust leak. After that, drive to a professional repair shop for a thorough inspection and proper repair. Don't try to tough it out yourself, as small problems can turn into major issues. Prolonged neglect may lead to significantly increased fuel consumption, failed emissions tests, or even engine damage. For prevention, always use high-quality fuel and regularly change the engine oil and air filter. Remember, timely attention to these issues is crucial for both safety and environmental protection.
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