Which warning light indicates an abnormality or malfunction in the engine control system?
2 Answers
The engine check light indicates an abnormality or malfunction in the engine control system. Here is some information about the engine check light: 1. Car engine check light: The meaning when the light is on is an indicator of the engine's working condition. It lights up when the ignition is turned on and goes off after about 3-4 seconds if the engine is normal. 2. Function: It is used to alert the driver whether there is a fault in the engine, and a self-check is performed every time the vehicle is started. The reasons for the engine check light to illuminate are as follows: 1. Sensor issues: Including water temperature, crankshaft position, air flow, intake temperature, oxygen sensor, etc. When these sensors are damaged, have poor contact, or signal interruption, the car's ECU cannot accurately obtain engine data, which will cause the engine check light to illuminate. 2. Maintenance issues: Poor engine maintenance is the most common cause of the engine check light illuminating. 3. Poor combustion of the air-fuel mixture: Faults in the engine's spark plugs, ignition coils, fuel pump, or clogged fuel lines can all cause poor combustion of the air-fuel mixture. Poor combustion leads to engine carbon buildup or knocking problems, which are eventually detected by the oxygen sensor in the exhaust system. After reporting to the ECU, the engine check light will illuminate as a warning.
Having driven for over a decade, I'm quite familiar with the warning lights on the dashboard. When that little yellow engine icon lights up, it usually indicates an issue with the engine control system. I encountered this with my old Accord – after the light came on, the car noticeably lost power and started shaking. I immediately took it to the repair shop for a computer scan, which revealed a burnt-out ignition coil. There are many possible reasons for this light to illuminate: it could be a faulty sensor, electrical circuit short, exhaust system leak, or ignition system problem. Never ignore this warning light – my neighbor delayed addressing it and ended up spending thousands on major engine repairs. My advice: first check for abnormal vibrations or power loss. If the car drives normally, you can carefully proceed to a repair shop for diagnosis. But if the light flashes urgently, you must stop the vehicle immediately.
