A long light indicates that the engine is in poor combustion state, the engine knocks, the fuel quality is poor, and the inside of the engine cylinder is not clean.
Engine indicator lamp refers to the indicator lamp used to display the working state of the vehicle engine. This indicator lamp is used to display the working state of the vehicle engine. When the key door is opened, the indicator light will automatically light up and go out when the vehicle is self-tested. If it is on all the time, it means that the engine of the vehicle has mechanical failure and needs maintenance.