What does it mean when the engine exhaust system warning light comes on?
2 Answers
Solutions for when the engine exhaust system warning light comes on are as follows: 1. Start and turn off the vehicle three times in a row, or disconnect the negative terminal of the engine battery, wait for 30 seconds, and then reconnect it. After performing the above steps, check if the engine warning light on the dashboard is still on. This method only applies to false engine faults. 2. The engine exhaust system warning light often comes on due to damage to the oxygen sensor in the three-way catalytic system or poisoning of the catalytic converter caused by poor fuel quality in the country. If the light comes on while driving, immediately reduce speed and drive to the nearest service station for inspection. 3. If the vehicle cannot start after the warning light comes on, this is usually due to a malfunction in the fuel pump or ignition system, and a tow truck should be called directly.
I also encountered this warning light coming on not long ago. It usually indicates an issue with the exhaust system, such as a faulty oxygen sensor which prevents the engine from properly monitoring emissions, or a clogged catalytic converter where carbon buildup affects efficiency. Sometimes poor fuel quality or dirty fuel lines can trigger the alert, and exhaust leaks may also illuminate this light. I recommend taking it to a professional repair shop immediately - they can use an OBD scanner to read trouble codes and pinpoint the exact problem. Ignoring it will not only cause fuel consumption to skyrocket but may also damage other components, leading to bigger expenses. For safety, avoid long-distance driving before repairs, and maintaining proper emissions is also better for the environment. Regular maintenance can prevent this - like me, I always have the mechanic check the exhaust system during oil changes, which is quite hassle-free.
