What is the reason for the engine malfunction light coming on?
2 Answers
When the engine light comes on while driving, it could be due to engine knocking, etc. The reasons and solutions are as follows: Detailed Reasons: The vehicle malfunction light usually comes on due to the fuel emission system; poor engine combustion state; engine knocking; poor fuel quality; unclean engine cylinder interior with accumulated carbon deposits; the computer failing to obtain engine data; false faults, etc. Solutions for the Engine Malfunction Light: Promptly check the condition of the car's engine; inspect the state of the car's sensors, air flow sensor, and spark plug components; check for any knocking in the car; examine if there are any faults in the ignition coil.
With years of experience in car repair, I've identified several common causes for the check engine light. Faulty sensors are the prime suspects, especially the oxygen sensor or mass airflow sensor, which often give false readings due to dust or aging. Fuel system issues like clogged fuel injectors or a failing fuel pump can disrupt engine combustion and trigger the light. Emission system components such as the EGR valve or a degraded catalytic converter are also frequent culprits. Additionally, ignition system problems like worn spark plugs or failing coils will prompt the electronic control unit to illuminate the warning light. I don't recommend ignoring it – start by checking if the fuel cap is properly tightened, as sometimes small details can solve the issue. If the light persists, invest in an OBD scanner to read the trouble codes, then either address it yourself or consult a professional, saving both time and money. Regular oil changes and maintenance can prevent these issues, keeping your engine running smoothly.
