The fault code of Ford Max engine is p2 12 1. What's wrong with p2 122?

The fault code content of this vehicle, P2 12 1: Circuit range/performance of accelerator/accelerator pedal position sensor/switch D; P2 122: The voltage of the accelerator/accelerator pedal position sensor/switch D circuit is too low.

The fault codes P2 185, P2 122, P2 127, P013 and P01kloc-0/8 are stored in the engine control unit. According to the analysis of the fault phenomenon, it is considered that the reason for the high idle speed of the engine is that the accelerator pedal or the accelerator control unit is faulty, so only the relevant data of the accelerator and the accelerator pedal are watched in the data stream, and the working state of the accelerator is simulated by stepping on the accelerator, and it is found that the data is unchanged and incorrect.