The reason why the engine emission fault light is on. What should I do if the engine emission warning light is on

Engine emission fault light is actually what we often call engine fault light , It's just that different brands have different names , It's actually a thing . When our engine breaks down , These faults generate a string of codes ,ECU After reading the fault code , It will appear on the instrument panel in the form of indicator light . If the car starts , The engine emission fault light remains on , That means there may be a problem with your engine .

Causes and solutions of engine exhaust system fault light on 1、 Start and stop the vehicle for three consecutive times , Or you can unplug the negative pole of the engine battery , wait for 30 Connect it in seconds . After the above method is completed, check whether the engine fault light on the instrument panel is still on . This method is only applicable to the false fault of the engine .

2、 The failure light of engine exhaust system is mostly caused by the damage of oxygen sensor in three-way catalytic system or poisoning of three-way catalytic converter caused by domestic oil quality , If the light is on during driving, please slow down immediately , And drive to the nearest maintenance service station for maintenance .

3、 If the fault light comes on , The vehicle cannot be started when the engine is off , This is usually caused by the failure of the fuel pump or ignition device , Just call a trailer ; If you can continue driving , However, the vehicle shakes seriously 、 Acceleration, weakness and other symptoms , It is still recommended to stop driving , This not only prevents further damage to the engine , It can also ensure the personal safety of you and others .

source ： Car home