When the car water faucet indicator lights up, it means there is a problem with the engine or exhaust system.

If the light fades away after a few seconds, it is a common system check.

If the car water faucet remains lit up, it could mean a common problem with the exhaust system.

If the car water faucet keeps flickering, it indicates that the engine is missing fire and has damaged the catalytic converter.

When the engine (exhaust system) fault light is on, if the water temperature and oil pressure warning lights are not yet on, the vehicle can still be driven. However, it is important to drive slowly and carefully, and find a nearby car repair shop for repairs.

If the temperature is too high or the oil pressure indicator also lights up, and you can clearly feel the car's problems, you should immediately request assistance on the road.

The root cause of the car water faucet indicator lighting is poor quality or不合格 fuel, spark plug carbon, o2 sensor failure, engine knock, water temperature sensor failure, and engine missing cycle. If not treated in time, it could lead to engine damage and不合格废气 emissions.