08' 08 mazda 6 coupe, now there is fault code P2 138.

P2 138 fault code is applicable to all automobile manufacturers, indicating the D/E voltage correlation of throttle/accelerator pedal position sensor/switch. 1, throttle failure When the throttle fails, the vehicle will have symptoms such as engine jitter, unstable idle speed, weak refueling, and difficulty in starting a cold car. In this case, the throttle valve should be cleaned again, especially when it is connected to this part.