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P2120 – BMW DTC

BMW DTC P2120 – Throttle/Pedal Position Sensor/Switch ‘D’ Circuit

DTC P2120 meaning on BMW

The Diagnostic Trouble Code (DTC) P2120 for BMW refers to an issue with the Throttle/Pedal Position Sensor/Switch ‘D’ Circuit. This code indicates that there is a malfunction in the circuit related to the throttle or pedal position sensor/switch ‘D’.

BMW DTC P2120 symptoms

Symptoms of DTC P2120 on a BMW may include:

  • Reduced engine power
  • Difficulty accelerating
  • Check Engine Light (CEL) illuminated on the dashboard
  • Unresponsive throttle pedal

BMW DTC P2120 causes

Common causes of DTC P2120 on a BMW include:

  • Faulty throttle or pedal position sensor/switch ‘D’
  • Wiring or connector issues in the sensor circuit
  • Corrosion or poor connections in the sensor circuit

BMW DTC P2120 seriousness

The seriousness of DTC P2120 on a BMW should not be ignored, as it can lead to drivability issues and potential safety concerns. It is recommended to address this code promptly to prevent further damage to the vehicle.

How to diagnose DTC P2120 on BMW

To diagnose DTC P2120 on a BMW, you can follow these steps:

  1. Use a diagnostic scanner to retrieve the fault code
  2. Inspect the throttle and pedal position sensor/switch ‘D’ for any visible damage
  3. Check the wiring and connectors in the sensor circuit for any issues
  4. Perform a thorough inspection of the throttle system for any other potential faults

How to fix DTC P2120 on BMW

To fix DTC P2120 on a BMW, you can try the following:

  1. Replace the faulty throttle or pedal position sensor/switch ‘D’
  2. Repair any damaged wiring or connectors in the sensor circuit
  3. Clean any corrosion or poor connections in the sensor circuit
  4. Clear the fault code and test drive the vehicle to ensure the issue is resolved

How to erase DTC P2120 on BMW

To erase DTC P2120 on a BMW, you can use a diagnostic scanner to clear the fault code from the vehicle’s memory. Once the code is cleared, you can test drive the vehicle to ensure the issue has been resolved.

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

← All BMW Diagnostic Trouble Codes

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