What Causes the Engine Light to Illuminate?

1 Answers
DeAlice
07/28/25 4:58pm
The engine light may illuminate due to intermittent or persistent faults, such as: 1. If the warning light occasionally turns on, it indicates an intermittent fault, and the vehicle can still be used; 2. If the warning light remains on and the vehicle exhibits noticeable abnormalities, immediate inspection and repair at a 4S shop are required. It is recommended to change the gasoline and drive at high speeds. If the warning light persists after high-speed driving, promptly visit a 4S shop to retrieve the fault codes. Issues such as faulty spark plugs, malfunctioning ignition coils, fuel pump failures, or clogged fuel lines can lead to poor combustion of the air-fuel mixture in the engine. Poor combustion results in engine carbon deposits or knocking problems, which are eventually detected by the engine's oxygen sensor. After reporting to the ECU, the fault light is activated as a warning.
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