How to Deal with the Exhaust Emission System Warning Light?
2 Answers
Unburned or incompletely burned fuel, engine knocking, excessively high engine temperature, requires throttle valve cleaning. The engine has high requirements for fuel quality. Due to poor fuel quality and accumulated carbon deposits, engine carbon deposit cleaning is necessary. Especially when the weather temperature drops sharply, the pollution warning light may illuminate during startup due to the computer's temperature correction issue, and it will stabilize relatively when the temperature drops to a certain level.
When the exhaust emission system warning light suddenly comes on, I usually advise car owners not to panic, but never ignore it. This situation is mostly caused by issues with exhaust components, such as aging oxygen sensors or clogged catalytic converters, leading to excessive emissions. Dirty or faulty sensors are the most common culprits, as inaccurate signals trigger the warning light. If it's a sensor problem, timely cleaning or replacement won't cost much; but if it's a catalytic converter issue, repairs can be expensive. It's best to immediately visit a 4S shop or auto repair shop to read the fault codes with a diagnostic tool and pinpoint the root cause. Ignoring this warning may lead to engine failure, increased fuel consumption and pollution, and make the car run poorly. From personal experience, using high-quality gasoline and regular component cleaning can prevent such problems.
