What Does the Faucet Icon on the Dashboard Mean?

[McJoseph]

The faucet symbol on the car dashboard is the engine malfunction indicator light. Here is an analysis of potential engine fault causes: 1. Oxygen sensor failure: Poor contact or damage to the oxygen sensor prevents the ECU from accurately monitoring combustion conditions, leading to partial loss of emission control functionality. 2. Coolant temperature sensor malfunction: Resistance value deviation causes improper electronic fan activation timing, resulting in engine operating temperature deviations from specifications or post-overheating cylinder/pipeline sealing issues that reduce engine efficiency. 3. Fuel pump failure: Intermittent contact causes improper fuel injection, resulting in incomplete combustion.