BMW DTC P2122 – Throttle/Pedal Position Sensor/Switch ‘D’ Circuit Low
DTC P2122 meaning on BMW
The Diagnostic Trouble Code (DTC) P2122 for BMW indicates an issue with the Throttle/Pedal Position Sensor/Switch ‘D’ Circuit registering a low voltage signal. This sensor is crucial for the engine control unit to determine the throttle position and adjust fuel delivery and ignition timing accordingly.
BMW DTC P2122 symptoms
Symptoms of DTC P2122 on a BMW may include:
- Reduced engine power
- Engine stalling or hesitation
- Difficulty accelerating
- Illuminated Check Engine Light
BMW DTC P2122 causes
Common causes of DTC P2122 on a BMW include:
- Faulty Throttle/Pedal Position Sensor/Switch ‘D’
- Wiring or connector issues in the sensor circuit
- Corrosion or poor connections in the sensor circuit
BMW DTC P2122 seriousness
The seriousness of DTC P2122 on a BMW lies in the potential for reduced engine performance and drivability issues. Ignoring this code can lead to further damage to engine components and may result in unsafe driving conditions.
How to diagnose DTC P2122 on BMW
To diagnose DTC P2122 on a BMW, you can:
- Use a diagnostic scanner to retrieve the fault codes
- Inspect the Throttle/Pedal Position Sensor/Switch ‘D’ for any visible damage
- Check the wiring and connectors for any signs of wear or corrosion
How to fix DTC P2122 on BMW
To fix DTC P2122 on a BMW, you may need to:
- Replace the Throttle/Pedal Position Sensor/Switch ‘D’
- Repair or replace any damaged wiring or connectors in the sensor circuit
- Clear the fault codes and perform a test drive to ensure the issue is resolved
How to erase DTC P2122 on BMW
To erase DTC P2122 on a BMW, you can:
- Use a diagnostic scanner to clear the fault codes
- Ensure the underlying issue causing the fault code has been addressed
- Perform a final check to confirm the code has been successfully erased
Recommended tools & DTC Scanners for BMW
Best Diagnostic App for modern BMWs: BimmerLink
Recommended Bluetooth adapter for Bimmerlink: OBDLink CX
Cable adapter for Bimmerlink: Enet Cable USB Type C
For older BMWs we recommend: Autel AutoLink AL319 (2024 version)
Easy-to-use Multimeter for reliable diagnostics: AstroAI Auto-ranging Multimeter
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