Volkswagen P1634: Acceleration Pedal Position Sensor 2 Signal Too High

Is your scanner showing Volkswagen P1634?
No worries. We'll show you what it means and how to deal with it.

Presented by
Randy Worner

Volkswagen P1634: Acceleration Pedal Position Sensor 2 Signal Too High

OVERVIEW
Severity
:
High
DIY Difficulty Level
:
Intermediate
Repair Cost
:
$100-$300
Can I Still Drive?
:
Yes (Short-term only)

What Does The Volkswagen P1634 Code Mean?

Engine started, battery voltage at least 11.5v, all electrical components off, ground connections between engine and chassis well connected, the ECM detected that the accelerator pedal position sensor signal was too high. Note: Both the Throttle Position (TP) Sensor and Accelerator Pedal Position Sensor 2 are located at the accelerator pedal module and communicate the driver’s intentions to the ECM completely independently of each other. Both sensors are stored in one housing.

What Are The Potential Causes Of The Volkswagen P1634 Code?

  • Ground between engine and chassis may be broken
  • Throttle position sensor may have failed
  • Accelerator Pedal Position Sensor 2 has failed
  • Throttle position sensor wiring may have shorted
  • Faulty voltage supply
  • ECM has failed

Recommended Parts

Below are some recommended auto parts to help you address the trouble code affecting your vehicle and get it running smoothly again:

>>> WORKPRO 582-piece Crimp Terminals, Wire Connectors, Heat Shrink Tube, Electrical Repair Kit
>>> Twippo 372Pcs Waterproof Wire Connectors Kit
>>> Volkswagen Engine Control Module
>>> 1812089 Throttle Position Sensor
>>> Volkswagen Jetta Accelerator Pedal Sensor

Note: During the purchasing process, please check carefully whether the part you want to buy fits your car!

Reference Sources

Volkswagen P1634, DTCDECODE.

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