Abnormal exhaust controller?

The exhaust controller is abnormal, and the most common reasons are as follows:

1. There is something wrong with the sensor. Such as intake pressure sensor failure, oxygen sensor failure, etc. If the exhaust controller is abnormal and the engine fault light on the instrument panel is on, you can check the front and rear oxygen sensors first to see if there is any problem.

2.EGR has a problem. EGR is the abbreviation of English exhaust gas recirculation, which means exhaust gas recirculation system in Chinese. The setting of EGR system is to reduce NOX emission in automobile exhaust and ultimately reduce air pollution. If the EGR system is damaged, it may lead to problems such as fuel consumption, unstable engine idle speed, insufficient power and insufficient combustion.

3. False failure. Sometimes there will be a false fault in the car, that is, there is nothing wrong with the car itself, but once the operation is beyond the control of the computer, a fault code will appear. In this case, the car can run normally, and the solution is only to eliminate the fault code.

In fact, it is recommended to go to a 4S shop or a professional garage for technicians to check. Because all faults that can affect the power output of the engine will lead to the lighting of the exhaust fault lamp. So it's hard to judge what the reason is because you can't see the real car. Only when the problem is determined can it be cured. Million car purchase subsidy