What Are the Reasons for the Engine Malfunction Light to Illuminate?
2 Answers
The reasons for the engine malfunction light to illuminate are: 1. Poor fuel quality, leading to incomplete combustion of the engine's air-fuel mixture; 2. Dirty throttle body or carbon buildup on valves and fuel injectors; 3. Damaged, poorly connected, or interrupted sensors around the engine; 4. Faulty spark plugs, ignition coils, fuel pump, or clogged fuel lines. Methods for engine maintenance: 1. Regularly change engine oil and oil filter; 2. Maintain good crankcase ventilation; 3. Periodically clean the crankcase; 4. Regularly clean the fuel system; 5. Maintain the radiator regularly; 6. Clean and maintain the fuel system, using an engine no-disassembly cleaning agent when cleaning the engine fuel system.
As an experienced driver, I've seen the engine warning light come on several times. Common causes include exhaust system issues, such as a dirty oxygen sensor or a clogged catalytic converter, triggering an emissions alert; fuel system problems like carbon buildup in the fuel injectors or a weak fuel pump, causing abnormal air-fuel mixture; ignition system failures, such as worn spark plugs or broken high-voltage wires, affecting ignition efficiency; and sensor false alarms, like a malfunctioning temperature sensor or mass airflow sensor. My advice is not to panic when the light comes on—first, use an OBD tool to read the fault code and pinpoint the issue. Timely repairs are crucial, otherwise fuel consumption may spike, and the engine could be damaged. Regular checks of engine oil and filters can prevent many problems, which is much more cost-effective than paying for repairs later. Remember, safe driving comes first—don’t let small issues turn into big ones.
