What does the mini-car fault code "P0 122" mean?

Fault code "P0 122" is throttle/accelerator pedal position sensor/switch A circuit low.

English definition: accelerator/pedal position sensor/switch A circuit low category.

Fuel or air In the electronic throttle control (ETC) system, the function of the accelerator pedal position sensor is to transmit the position of the accelerator pedal to the throttle control module in the form of electrical signals.

This fault code indicates that the signal voltage of electronic accelerator pedal position sensor A is lower than the calibrated minimum value.

First, the car fault code

Fault code is the fault code reflected by ECU analysis of automobile computer after automobile fault occurs.

Usually, frequent fault codes are caused by sensor faults and sensor malfunctions.

There are some mechanical faults that ECU can't read, and there are some basic fault displays on the dashboard of the car.

The main fault code still needs to be read by the instrument decoder. There are many kinds of decoders, such as X-43 1 KT300, but the working principle is the same as the reading failure.

There are also fault codes divided into real codes, historical codes and accidental codes. Real codes are easy to detect. History literally means uncleared fault codes left over from the past, but accidental fault codes are not fixed.