P2139 – BMW DTC

BMW DTC P2139 – Throttle/Pedal Position Sensor/Switch ‘D’ / ‘F’ Voltage Correlation

DTC P2139 meaning on BMW

The Diagnostic Trouble Code (DTC) P2139 for BMW indicates a voltage correlation issue between the throttle position sensor and the pedal position sensor. This means that the signals from these sensors are not matching up as expected by the Engine Control Module (ECM).

BMW DTC P2139 symptoms

Symptoms of DTC P2139 on a BMW may include:

• Reduced engine power
• Engine stalling
• Difficulty accelerating
• Check Engine Light illuminated

BMW DTC P2139 causes

Common causes of DTC P2139 on a BMW include:

• Faulty throttle position sensor
• Faulty pedal position sensor
• Wiring or connector issues in the sensor circuit
• ECM software or hardware problems

BMW DTC P2139 seriousness

DTC P2139 should be taken seriously as it can lead to drivability issues and potential safety concerns. It is recommended to address this issue promptly to avoid further complications.

How to diagnose DTC P2139 on BMW

To diagnose DTC P2139 on a BMW, you can perform the following steps:

1. Use a diagnostic scanner to retrieve the fault codes
2. Inspect the throttle position sensor and pedal position sensor for any visible damage
3. Check the wiring and connectors for any signs of wear or corrosion
4. Perform a voltage test on the sensors to verify proper operation

How to fix DTC P2139 on BMW

To fix DTC P2139 on a BMW, you may need to:

1. Replace the faulty throttle position sensor or pedal position sensor
2. Repair any damaged wiring or connectors in the sensor circuit
3. Update the ECM software if necessary
4. Clear the fault codes and perform a test drive to ensure the issue is resolved

How to erase DTC P2139 on BMW

To erase DTC P2139 on a BMW, you can:

1. Use a diagnostic scanner to clear the fault codes
2. Disconnect the battery for a few minutes to reset the ECM
3. After clearing the codes, perform a test drive to confirm 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

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