Audi P1633: Acceleration Pedal Position Sensor 2 Signal Too Low
Is your scanner showing Audi P1633?
No worries. We'll show you what it means and how to deal with it.
Audi P1633: Acceleration Pedal Position Sensor 2 Signal Too Low
OVERVIEWWhat Does The Audi P1633 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 low.
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 Audi P1633 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:
Note: During the purchasing process, please check carefully whether the part you want to buy fits your car!
Reference Sources
- Audi A4 Avant 95-01 Service Repair Manual, page 61.
- Omnitek Engineering Corp., 2006, Diagnostic Trouble Code (DTC) Guide for Omnitek ECM 64A/66A/88A, page 142-143.
