What are the reasons for the car engine malfunction indicator light to illuminate?
2 Answers
The reasons for the car engine malfunction indicator light to illuminate are: 1. Sensor failure causing the car's ECU to inaccurately obtain engine data; 2. Carbon buildup in the engine; 3. Faulty spark plugs, ignition coils, or fuel pump; 4. Clogged fuel lines leading to incomplete combustion of the air-fuel mixture; 5. Blocked intake valves. Methods to address the illuminated engine malfunction light include: 1. Remove the positive and negative battery terminals, wait for 20 seconds, then reattach them; 2. Replace spark plugs or ignition coils; 3. Replace the air filter and clean the throttle body and fuel lines; 4. Change the engine oil; 5. Clean carbon deposits from the engine.
As a new car owner, I've encountered the issue of the engine warning light coming on. The most common causes include oxygen sensor failure, worn or carbon-fouled spark plugs, and fuel system blockages. The oxygen sensor measures the oxygen content in the exhaust; if inaccurate, it can lead to increased fuel consumption and excessive emissions. Aging spark plugs can cause poor ignition and more noticeable engine vibrations. If the fuel system is contaminated, insufficient fuel supply may trigger the light. Sometimes, a damaged catalytic converter can also activate this light due to emission control issues. It's advisable to get it checked promptly, as delaying could worsen the problem and affect safety. Regular maintenance, such as periodic replacement of air filters and spark plugs, can prevent many issues. Last time my light came on, the repair shop found a faulty oxygen sensor, which was replaced at a cost, solving the problem. However, procrastination could lead to more expensive repairs.
