P1634 AUDI, VOLKSWAGEN: ACCELERATOR PEDAL POSITION SENSOR 2 SIGNAL INPUT HIGH
POST UPDATED IN May, 2023
P1634 AUDI, VOLKSWAGEN: ACCELERATOR PEDAL POSITION SENSOR 2 SIGNAL INPUT HIGH
The APP sensor (Accelerator Pedal Position) is a device whose function is simple to understand because it tells the Powertrain Control Module (PCM) in which position the accelerator pedal is located. In other words, it is in charge of informing whether or not the driver presses the accelerator pedal.
There are 2 APP sensors installed in the car and both provide electrical signals to the PCM, through which they deliver the corresponding information. It is worth mentioning that these sensors should not be confused with the TPS, and although their operation is similar, they have totally separate tasks depending on the position of the accelerator pedal.
The fault code P1634 OBD2 is a code that Audi and Volkswagen vehicle manufacturers use to indicate that the Accelerator Pedal Position Sensor 2 has a high input voltage signal provided.
DTC P1634 OBDII is set for one of the following reasons:
The steps to follow to properly troubleshoot the P1634 OBD2 diagnostic code are: