Reasons for the Malfunction Light of the Electronically Controlled Engine?

[EllaFitz]

Engine electronic control system malfunctions are caused by internal engine faults or poor combustion leading to excessive exhaust emissions. Below are the reasons that may cause such malfunctions: 1. Engine electrical faults: These faults include damage to certain sensors, such as the air flow meter, throttle idle motor, intake pressure sensor, oxygen sensor, etc. They also include issues with control units or actuators, such as the engine control unit (ECU), ignition control unit, fuel pump, camshaft adjustment solenoid valve, etc. 2. Engine mechanical faults: Such as changes in fuel quality, the use of fuel with excessive additives, or carbon buildup covering the intake tract, throttle, or spark plugs. Additionally, intake tract air leaks below standard values can also cause corresponding faults. When an engine electronic control system malfunction occurs, if only the yellow indicator light is illuminated, you may continue driving but should proceed to a repair facility as soon as possible for inspection and repair. If the red indicator light is illuminated, you should stop the vehicle immediately and contact a repair facility for assistance.