What causes the engine light to come on in a Nissan Sylphy?

[DeHarper]

Dongfeng Nissan Sylphy engine indicator light may come on due to: sensor damage, poor contact, or signal interruption, which can trigger the engine fault light. Fuel quality issues: Poor gasoline quality can affect the incomplete combustion of the air-fuel mixture in the cylinders, leading to the light coming on. Air intake system problems, such as a clogged air filter in the car, can also cause the engine fault light to illuminate. Engine spark plug issues: Ignition coil failure, fuel pump failure, or fuel line blockage can all lead to poor combustion of the engine's air-fuel mixture. Poor combustion results in engine carbon buildup or knocking problems, which are ultimately detected by the engine's oxygen sensor and reported to the ECU, naturally triggering the fault light as a warning.