What happened when the diesel engine exhaust fault light came on?

1. If the fault light is on, the vehicle cannot be started when it is turned off. This is usually caused by the failure of the fuel pump or ignition device, and it is necessary to replace the new fuel pump or ignition coil and spark plug. If you continue to drive, the vehicle will have severe vibration and weak acceleration, which can not only avoid further damage to the engine, but also ensure the personal safety of the drivers and passengers.

2, engine exhaust system fault lights are mostly caused by domestic oil. If the oxygen sensor in the three-way catalytic system is damaged or the three-way catalytic converter is poisoned, please slow down immediately and drive to the nearest service shop for maintenance.

3. The fault light of the engine exhaust system is on because there is too much carbon deposit in the throttle or engine, which leads to the imbalance of the mixture ratio. Then, when the engine computer detects some signals that affect the emission requirements, the fault will light up; Vehicles with carbon deposits need to be cleaned or the throttle should be replaced.

When the engine fault light is on, the following problems usually occur:

1, the quality of automobile exhaust becomes worse, polluting the environment; ?

2. The increase of automobile fuel consumption wastes petroleum resources and RMB resources;

3. The temperature of the combustion chamber increases and the wear intensifies, which may lead to early engine damage;

4. Engine burns engine oil;

5, the engine noise increases, affecting driving and riding comfort.