What does it mean when the car engine's yellow light is on?

[OZane]

Reasons for the car engine's yellow light being on: 1. Dirty throttle body; 2. Poor fuel quality; 3. Faulty oxygen sensor; 4. Clogged catalytic converter; 5. False alarm from the engine. This indicates a fault in some part of the engine, suggesting the need for timely inspection and repair. A professional can use computer diagnostics to clear the fault code. There are several ways the engine warning light can illuminate: steady yellow light, flashing yellow light; red light on, flashing red light. If the red light is on, it indicates a serious problem, and it is recommended to go to a 4S shop immediately for inspection and repair. If the yellow light is on, the fault may not affect driving, but it is still advisable to check as soon as possible. The car can read the fault code through the OBD interface using a computer.