P1120 – BMW DTC

BMW DTC P1120 – Pedal Position Sensor Circuit

DTC P1120 meaning on BMW

The DTC P1120 on a BMW indicates an issue with the pedal position sensor circuit. This fault code is triggered when the Engine Control Module (ECM) detects a discrepancy in the signal from the pedal position sensor.

BMW DTC P1120 symptoms

Symptoms of a DTC P1120 on a BMW may include:

• Reduced engine power
• Difficulty accelerating
• Check Engine Light illuminated
• In some cases, the vehicle may go into limp mode

BMW DTC P1120 causes

Common causes of a DTC P1120 on a BMW include:

• Faulty pedal position sensor
• Wiring issues in the pedal position sensor circuit
• Corrosion or poor connections in the sensor circuit

BMW DTC P1120 seriousness

The seriousness of a DTC P1120 on a BMW depends on the extent of the issue. While the vehicle may still be operable with reduced performance, it is important to address this fault code promptly to prevent further damage and ensure safe operation.

How to diagnose DTC P1120 on BMW

To diagnose a DTC P1120 on a BMW, you can follow these steps:

1. Use a diagnostic scanner to retrieve the fault code
2. Inspect the pedal position sensor and its wiring for any visible damage or corrosion
3. Test the sensor’s output signal using a multimeter
4. Check for any loose connections or poor grounds in the sensor circuit

How to fix DTC P1120 on BMW

To fix a DTC P1120 on a BMW, you can try the following:

1. Replace the faulty pedal position sensor
2. Repair any damaged wiring or connections in the sensor circuit
3. Clean any corrosion from the sensor terminals
4. Clear the fault code and test drive the vehicle to ensure the issue is resolved

How to erase DTC P1120 on BMW

To erase a DTC P1120 on a BMW, you can use a diagnostic scanner to clear the fault code from the ECM’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

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