What is the high idle speed of Wuling fault code p0507?

The fault code P0507 of Pacific Auto Network indicates that the engine speed of the idle air control system is higher than the set value. This fault code will appear if the engine computer detects that the engine idle speed is higher than the set value. The fault causes include air leakage behind the throttle body, IAC control circuit fault, IAC solenoid valve fault, throttle valve fault (damaged or dirty), EGR valve leakage, PCV valve fault, PCM or ECM fault, etc.

What is the meaning of automobile fault code p0400 and how to solve it;

1, P0400, A-flow failure of exhaust gas recirculation, which is the logical judgment failure of engine controller on the working state of exhaust gas recirculation solenoid valve -EGR.

Sometimes the engine of the vehicle will shake once or twice. When the engine controls the EGR valve to work, there will be other corresponding control corrections, such as reducing fuel injection. However, if your EGR flow rate is wrong, the fuel injection will be reduced, and the lean mixture will lead to a sudden drop in engine power, so it will shake.

3. When the engine is running with load, the EGR valve is opened, so that a small amount of exhaust gas enters the intake manifold and enters the combustion chamber together with the combustible mixture. When idling, the EGR valve is closed and almost no exhaust gas is recirculated to the engine.

4. Exhaust gas recirculation (EGR) control mode. The 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, and the vacuum degree of intake pipe enters EG through the solenoid valve. (Photo/Text/Photo: Pacific Auto Network Zhang Fengxue)