What's wrong with the warning light of the Big Dipper engine?

The engine trouble warning light looks like a yellow helicopter. There are many reasons why it lights up, which may be poor combustion state in the cylinder, engine knocking (abnormal engine combustion, high frequency and fluctuation of force curve, serious cylinder body breakdown), carbon deposition inside the engine, etc. ?

Among many faults, the most common one is that ECU can't get the engine data, which leads to the fault light. This phenomenon is also called pseudofault. In this case, it is only necessary to eliminate the fault code. In other cases, the fuel pump may not pump oil and the oxygen sensor fails. At this time, it is necessary to use a diagnostic instrument to detect the specific fault code and go to a professional repair shop for maintenance. ?

Extended data:

The internal cause of light engine pollution does not rule out the poor quality of gasoline, and there are the following factors:

1, the existence of carbon deposits at the air inlet and the top of the piston will lead to poor atomization, insufficient combustion and pollution of the lamp.

2. When the cold car starts, especially when the weather temperature drops sharply, the pollution lamp will light up due to the temperature correction problem of the computer, but as long as the temperature drops to a certain temperature, it will be relatively stable without fluctuation.

3. If the engine mileage is too long, the working characteristics of the spark plug will be weakened, which will lead to the lighting of the pollution lamp.

4. Too much carbon deposit and difficult ignition will lead to reverse breakdown of the ignition coil, resulting in poor ignition and incomplete combustion.

5, the vehicle is too old, mechanical aging leads to poor engine working conditions, poor combustion and ignition, and pollution lights are on.

6. Some sensors in the computer version failed, which led to the pollution of the lamp.

Phoenix. Com- the engine fault light suddenly lights up, which is the reason!

Phoenix Net-Don't ignore these 8 kinds of fault lights on the dashboard.