What does the faucet-like signal in a car indicate?

[MacElle]

The faucet-like signal in a car is the engine malfunction indicator light. Function of the indicator light: This indicator light displays the working condition of the vehicle's engine. When the ignition is turned on during the vehicle's self-check, the light illuminates and then automatically turns off. If it remains lit, it indicates a mechanical issue with the engine that requires repair. Reasons for illumination: Sensor issues: When a sensor is damaged, has poor contact, or experiences signal interruption, the car's ECU cannot accurately obtain engine data, triggering the engine malfunction light. Poor engine maintenance is the most common cause of the engine malfunction light illuminating. Vehicles have specific maintenance cycles, and if the owner fails to adhere to scheduled maintenance combined with poor driving habits, it increases the operational burden on the engine, ultimately triggering the warning light.