Which warning light indicates an abnormal or faulty engine control system?
2 Answers
Engine self-check light illuminates, indicating an engine abnormality or fault. The engine block serves as the skeleton of the engine, providing the installation foundation for various mechanisms and systems. It houses all major components and accessories of the engine, both internally and externally, and withstands various loads. Therefore, the engine block must possess sufficient strength and rigidity. The block mainly consists of components such as the cylinder block, cylinder liner, cylinder head, and cylinder gasket. Below are common causes of engine faults: 1. Sensors: Malfunctioning coolant temperature sensor. 2. Flow meter: Faulty air flow meter. 3. Throttle: Malfunctioning throttle position sensor. 4. Pressure: Excessive fuel pressure.
Having driven for many years, I immediately recognize that the illuminated yellow engine icon on the dashboard indicates an issue with the engine control system. This light is called the check engine light, meaning the onboard computer has detected an abnormality, which could stem from various causes like sensor failure, worn spark plugs, or clogged fuel injectors. If left unaddressed, the car may experience sluggish acceleration, skyrocketing fuel consumption, or even stall unexpectedly. I recommend first checking simple things like whether the fuel cap is loose, then promptly visiting a repair shop to read the trouble codes with professional equipment. Regular maintenance such as oil changes and component inspections during routine servicing can significantly reduce such occurrences. From my experience, never ignore it—small issues can escalate into major problems and compromise driving safety.
