What is the method to eliminate the engine malfunction light?

[DeHope]

Methods to clear the engine malfunction light: When the engine malfunction light is on, start and turn off the vehicle three times in a row, or disconnect the negative terminal of the engine battery and wait for 30 seconds before reconnecting it. After performing the above methods, check if the engine malfunction light on the dashboard is still on. The engine malfunction signal on the car dashboard is issued by the ECU (Engine Control Unit), which controls all electronic devices of the engine, such as the electronic throttle, fuel injector, alternator, fuel pump, etc., covering various systems including intake, exhaust, fuel, ignition, and timing.

[VanJosephine]

I've been driving for over a decade and have had the engine warning light come on a few times. Each time, I stay calm and handle it methodically. Here's my step-by-step approach: First, use an OBD-II scanner to plug into the car's diagnostic port and read the trouble codes—those cheap Bluetooth ones available online work fine. After reading the codes, investigate the cause. Common issues include faulty oxygen sensors, loose gas caps, or worn spark plugs. I once had a simple case where the gas cap wasn't tightened properly; after tightening it, the light turned off after driving a few dozen kilometers. However, if the scanner indicates serious problems like catalytic converter failure, you must take it to a professional repair shop. After repairs, the scanner can reset the warning light. Remember, the light is a warning signal—never ignore or forcibly disable it to avoid engine damage. Regular engine maintenance can help prevent these issues.

[McCamila]

As a car enthusiast, I enjoy tinkering with my car myself. When the check engine light comes on, I immediately pull out my phone and use an OBD scanning app for diagnosis. The method involves plugging a small adapter into the diagnostic port and waiting for the app to display the trouble codes. For instance, one time it showed a mass airflow sensor issue, which I fixed by cleaning it; another time it was a dirty throttle body, and the light went off after a simple cleaning. After the repair, the app has a reset button. DIY can save money, but for complex issues like emission system faults, don't push your luck—it's better to ask a knowledgeable friend for help or visit a repair shop. Maintaining the intake and fuel systems is key, such as regularly replacing the air filter.

[CarterAnn]

As a family car owner, I'm very anxious when the engine light comes on, worrying about the safety of my family's travel. Safety comes first: immediately stop to check for visible issues like a loose fuel tank cap, which is a common cause. Tightening it might turn the light off after driving. If not, use a scan tool to read the codes or go straight to the repair shop. Fix the problem, such as replacing a damaged sensor, then reset the light. Don't delay, or a minor issue could turn into engine failure. Regularly check the car's condition every six months.