What are the reasons for the engine yellow light in the X-Trail car?

[KinsleyDella]

The reasons for the engine yellow light in the X-Trail car are: Sensor issues: Sensors include coolant temperature, crankshaft position, air flow, intake temperature, oxygen sensors, etc. When these sensors are damaged, have poor contact, or experience signal interruption, they can cause the engine fault light to illuminate. Maintenance issues: Poor engine maintenance is the most common cause of the engine fault light. Vehicles have specific maintenance cycles, and it is important to adhere to scheduled maintenance. Fuel issues: Poor fuel quality can lead to incomplete combustion of the air-fuel mixture during engine operation, causing the engine fault light to illuminate. Air-fuel mixture issues: Poor combustion of the air-fuel mixture can result in engine carbon buildup or knocking problems, which are eventually detected by the engine's oxygen sensor and can cause the fault light to illuminate. Air intake issues: The engine requires air intake during combustion. If the car's air filter is not clean and remains clogged for a long time, it can lead to serious issues and illuminate the engine fault light.