What should I do if the engine fault warning light is on?

What should I do if the engine fault warning light is on? There are many reasons for automobile engine failure, such as sensor failure, such as water temperature sensor, crankshaft sensor, oxygen sensor and so on. There are other fault lights such as spark plug fault, ignition coil fault, fuel pump fault and oil circuit blockage.

You know, the engine fault signal is sent by ECU (engine computer), which controls all electronic devices of the whole engine, such as electronic throttle, fuel injector, generator and fuel pump. , covering various systems such as air intake, exhaust, fuel, ignition and timing.

After the engine fault light is on, it can be divided into three situations, and each situation has a different solution:

First of all, the car can't start, which may be caused by the failure of the fuel pump or ignition parts. Then let's call for help. After all, it is very unlikely that ordinary people will try to bring their cars back to life on their own.

Second, the fault light is on, but there is no abnormality during driving. This may just be a sensor failure. In this case, you can continue driving temporarily, but it is best to drive slowly at medium and low speed. The next destination is of course the garage.

The third is that the engine fault light is on, and the vehicle can run, but it has symptoms such as severe jitter and weak acceleration. Faced with this situation, don't summon up courage to take risks and stop for help.