How to reset the engine fault light?

[SanTanner]

Engine fault light reset method: Simply pull out the fuse. Solutions for engine fault light illumination: Clean the engine: Once the engine fault light comes on, the owner should promptly clean the carbon deposits in the engine. Improve fuel quality: Domestic fuel currently cannot meet the requirements of high-performance engines, so owners can take steps to improve fuel quality themselves. Use higher-octane gasoline: After cleaning the engine, since most cars that comply with the National IV emission standards have an engine compression ratio of 10.0 or higher, these vehicles are not suitable for long-term use of gasoline below 95 octane. To maintain the engine in good working condition, owners can choose to use 95 or 97 octane gasoline, which usually resolves the engine fault light issue.

[MilaLee]

When the engine warning light comes on, I find it a bit annoying, but after experiencing it a few times, I know how to handle it. The best way to clear it is to first use an OBD scanner to read the trouble codes—there's a small port in the car, usually under the steering wheel. Plug it in and scan to see what the issue is, like a P0420 indicating an exhaust or catalytic converter problem. Clear the code, and the light will go off. But be careful: if it comes back on quickly, don't just clear it again—that’s just sweeping the problem under the rug. Chances are, you’ll need to fix the root cause, like a faulty oxygen sensor or a loose gas cap. I once cleared the light only for it to come back on, and it turned out to be a small battery leak, costing me more to fix. Regular oil changes and checking spark plugs can help prevent issues. If the light comes on while driving, slow down and stop in a safe place to avoid breaking down. Remember, safety first—make sure you know the basics or seek professional advice before attempting any fixes.

[Galadriel]

From a safety perspective, regarding this light, eliminating it isn't just about turning it off, but understanding why it's on. I usually plug in an OBD tool to scan, read the codes, and clear them to turn off the light, but caution is needed—if the cause is ignored, like a faulty sensor or emission issue, it could worsen the car's condition. For example, I once encountered the light being on because the fuel cap wasn't tightened properly; once tightened, it was fine. If it's something like a clogged air filter, replacing the part is necessary to resolve it. It's advisable not to rush to clear it: first, try turning the engine off and restarting a few times to see if the light disappears; if not, then use the tool to fix it. If the light comes on while driving, don't push it—reduce the load and go to the repair shop promptly. Regular maintenance, such as checking the exhaust system, can greatly reduce occurrences, ensuring smooth and worry-free driving.

[SanJames]

The simplest method I've used to clear this light: turn off the car for a few minutes and restart. Sometimes temporary faults reset this way. If that fails, buy a cheap OBD scanner to plug in and clear the codes—just a few bucks. But be warned: don't make this a habit. If the light returns, it indicates real issues like faulty fuel injectors or damaged wiring harnesses that need fixing. Learning this trick saved me trips to the shop, but carries risks—misdiagnosis can degrade performance. Regularly tuning the ignition system and cleaning dust are key to preventing light triggers. Stay calm when it happens; quick action minimizes impact.

[SanMalia]

That time when this light came on in my car, it really gave me a scare. I figured out the elimination method: borrowed a friend's scanner to read the fault code, cleared it, and the light went off. Turned out it was carbon buildup on the exhaust sensor – cleaned it and problem solved. Generally speaking, plug into the OBD port, scan for codes like P0300, hit the clear button and the light disappears instantly; but remember to test drive afterwards. If the light flashes again, don't delay fixing the root cause. I learned the hard way that just clearing without repairing increased my fuel consumption by 30%. Now I remind everyone: regularly check engine oil levels and sealing rings, prevention is better than cure. Whether you find tools or a mechanic, make sure the repair is thorough to avoid mishaps on the road.