What is the ct of the car fault light?

Sometimes, we will encounter car engine trouble, and we don't know how the car will continue the meeting. What about the ct of the car fault light?

When the car is running, or when the car is on fire, the car engine fault light on the instrument lights up, usually red or yellow. Once lit, it will not disappear automatically in most cases and will disappear automatically in a few cases.

Causes of engine fault light:

After the computer receives the parameters of the oxygen sensor, the exhaust emission seriously exceeds the national legal standard, and the internal program of the computer cannot be corrected to the standard range. At this time, the engine control computer will send a warning light (yellow pollution light is on) through the instrument to remind the owner to go to the maintenance station to check the engine pollution emission light.

When it comes to emissions, oil and other issues naturally come to mind. The internal cause of lamp pollution does not exclude the poor quality of gasoline. There are several other factors:

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

2. When the cold car starts, especially when the weather temperature drops sharply, because of the temperature correction problem, the pollution light will be on when the computer starts, but as long as the temperature drops to a certain temperature and there is no fluctuation, it will be relatively stable.

3. If the mileage of the engine is too long, the working characteristics of the spark plug will be weakened and the pollution lamp will light up.

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

A remarkable feature of this phenomenon is that when the ignition coil fails, the engine always shakes seriously. If it is not shaken violently all the time, the ignition coil can be basically eliminated.

5. The vehicle is too old, mechanical aging leads to poor engine working condition, and poor combustion and ignition leads to lamp pollution.

6. Some sensor computer boards fail by themselves, resulting in pollution of lamps.

There are many reasons for polluting lamps, but the first three are the most important. After the vehicle is started, the starting state is unstable, which may be accompanied by dead fire or lamp pollution. Sometimes after the flameout, the engine shakes and the pollution lamp disappears. Sometimes after restarting, the engine shakes normally, but the pollution light is on.

Can the car still drive when the fault light is on?

Not all engine trouble lights are off. If the engine fault light is on, there is no sound in the engine room, there is no other abnormal indication in the instrument, the vehicle power is not affected, and the gearbox upshift is not affected, you can continue to drive to the repair shop for further investigation.

Well, that's all the information about automobile fault light ct introduced by friends of Bian Xiao Automobile Maintenance Technology Network today. I don't know if my friends have a further understanding of the automobile fault light ct after listening to the introduction of Bian Xiao Automobile Maintenance Technology Network. I hope the brief introduction of Bianxiao Auto Maintenance Technology Network can help my friends. If you want to know more knowledge, just pay attention. Bian Xiao from Auto Maintenance Technology Network is waiting for you here!