Function of fault lamp
The fault light is a device to remind the driver that some faults may occur in the vehicle, and the driver needs to pay attention to it in time. Nowadays, cars have many functions, and there may be hundreds of fault warning lights.
The engine self-test prompt light will light up basically every time the car is started, indicating that the engine is doing self-test. After the self-test, if there is no engine fault, the icon will disappear and the whole self-test process will last for several seconds. If the icon does not go out continuously, there is something wrong with the car engine. At this time, it is best to go to the 4S shop for further inspection.