In order to ensure the reliability of the accelerator pedal signal, non contact Hall sensor was adopted as an electronic accelerator pedal position sensor. In order to ensure the acceleration pedal signal reliability with a non contact Hall sensor as the electronic accelerator pedal position sensor and the pedal position sensor signal, an improved first order low pass filtering algorithm was proposed and combined with the motor driving characteristics of the accelerator pedal position sensor signal fault diagnosis. Through the establishment of the pedal signal control simulation model, the reliability of the whole control process was tested. The results have shown that pedal signal glitches, too high, too low or synchronous error can accurately identify various fault conditions. This control method can meet the reliability control requirements of pure electric automobile electronic acceleration pedal.