What does a faucet-like symbol on the car mean?

[VonJason]

A faucet-like symbol on the car is the engine malfunction indicator light. If this light illuminates while driving, it may indicate that the engine is experiencing poor combustion conditions, engine knocking, poor fuel quality, dirty engine cylinders with carbon deposits, or unavailable computer data. The engine status indicator light: it turns on when the ignition is switched on and should go off after about 3 to 4 seconds. If it does not light up or does not turn off, it indicates an engine fault that requires immediate repair. When a malfunction indicator light on the car's instrument cluster illuminates, it means that the component represented by that light has an abnormality or fault. However, the exact cause of the fault cannot be determined without a professional diagnostic tool, so it's necessary to visit a 4S shop for a professional diagnosis.