What is the reason for the exclamation mark on the engine fault light?

[Rylee]

The reasons for the exclamation mark on the engine fault light are: 1. Poor gasoline quality leading to incomplete combustion of the mixture in the cylinder, resulting in carbon deposits; 2. Excessive engine mileage causing weakened spark plug performance; 3. Aging vehicle mechanics; 4. Damage, poor contact, or signal interruption of sensors such as water temperature, crankshaft position, air flow, intake temperature, and oxygen sensors. The hazards of the engine fault light being on include: 1. Deterioration of vehicle exhaust quality, polluting the environment; 2. Increased combustion chamber temperature and accelerated wear, leading to premature engine damage; 3. Engine oil burning; 4. Increased engine noise, affecting driving and riding comfort.