What is the function of the car engine fault light indicator?

[MacPiper]

The function of the car engine fault light indicator is to display the working condition of the vehicle's engine. When the key is turned on during the vehicle's self-check, this indicator light will illuminate and then automatically turn off. If it remains lit, it indicates that the vehicle's engine has a fault that requires inspection and repair. How to handle when the car engine fault light is on: After the engine fault light comes on, first pay attention to whether the engine is running normally, whether there is shaking, black smoke emission, or difficulty starting, etc. If any of these issues exist, try not to start the engine again. If the engine is running normally and the vehicle can be driven, please go to a service station as soon as possible to identify the cause. The reason for the fault light being on can be easily confirmed by connecting a portable diagnostic device at the service station, which can read the fault code and obtain fault information for targeted repair. If the engine is running normally, the owner can also try gently plugging in various wiring harness connectors, as it may be caused by a loose connection somewhere, or repeatedly turning the key to the ON position to see if the light can be turned off.