What Are the Reasons for the Car Engine Malfunction Light to Illuminate?
2 Answers
Car engine malfunction light illuminates due to: 1. Poor gasoline quality leading to incomplete combustion of the air-fuel mixture in the cylinder, resulting in carbon deposits; 2. Excessive engine mileage causing weakened spark plug performance; 3. Mechanical aging or damage of vehicle components; 4. Faulty sensors or computer board. Hazards of the car engine malfunction light: 1. Deterioration in exhaust gas quality, polluting the environment; 2. Increased combustion chamber temperature and accelerated wear, leading to engine damage; 3. Causing the engine to burn oil; 4. Increased engine noise, affecting driving and passenger comfort. Function of the engine: Converting the thermal energy of gasoline into mechanical energy by expanding gases through combustion in a sealed cylinder, thereby driving the piston to perform work.
As a seasoned driver with years of experience, I've encountered this situation quite a few times. The engine warning light usually comes on when that little part monitoring the air-fuel ratio goes bad, like an aging oxygen sensor or one contaminated with oil, giving inaccurate feedback that leads to system misjudgment. It could also be worn-out spark plugs causing poor ignition, or a clogged air filter restricting airflow and suffocating the engine. Last time my light came on, it turned out to be a faulty fuel level sensor, and replacing the part fixed it. I suggest you first check the basics: whether the oil level is normal, if the coolant is full, and try driving on the highway for a while to see if the light goes off. If that doesn't work, you'll need an OBD-II scanner to read the trouble codes and pinpoint the core issue. Don't push your luck by continuing to drive—increased fuel consumption is the least of your worries; risking a complete engine breakdown and major repairs would be a much bigger loss. Get it checked at a repair shop in time for peace of mind.
