Audi A8 fault light is on, and EgP light is on.

According to the fault phenomenon of the car, it should be the engine fault indicator and EGR indicator! ! If the car fault indicator and EGR indicator are on, the car will definitely not run normally! EGR, that is, exhaust gas recirculation, is a device for purifying harmful gases (nitrogen oxides). The EGR engine control computer, namely ECU, controls the solenoid valve to open in time according to the engine speed, load (throttle opening), temperature, intake flow and exhaust temperature. The vacuum degree of the intake pipe enters the EGR valve vacuum membrane chamber through the solenoid valve, and the diaphragm pull rod opens the EGR valve. A small amount of exhaust gas enters the intake system through EGR valve, and enters the cylinder to participate in combustion after mixing with mixed gas. It is suggested to use the automobile computer detector to detect the engine system, read the fault code and dynamic data flow, especially EGR parameters, and then repair the automobile according to the detected fault information! If the EGP light is on, EGP stands for external gateway protocol, which is related to the local area network of the vehicle, and may be a line problem!