BMW DTC P1123 – Pedal Position Sensor 1 Circuit High
DTC P1123 meaning on BMW
The DTC P1123 on a BMW indicates an issue with the Pedal Position Sensor 1 Circuit being too high. This means that the signal from the pedal position sensor is registering a voltage that is above the expected range, causing the engine control module to trigger the fault code.
BMW DTC P1123 symptoms
Symptoms of the DTC P1123 on a BMW may include:
- Reduced engine power
- Difficulty accelerating
- Check Engine Light illuminated
- Engine stalling or hesitation
BMW DTC P1123 causes
Common causes of the DTC P1123 on a BMW include:
- Faulty pedal position sensor
- Wiring or connection issues in the pedal position sensor circuit
- Corrosion or damage to sensor connectors
- Issues with the engine control module
BMW DTC P1123 seriousness
The DTC P1123 should be addressed promptly as it can lead to drivability issues and potential safety concerns. Ignoring this fault code may result in further damage to the vehicle and could potentially leave you stranded on the road.
How to diagnose DTC P1123 on BMW
To diagnose the DTC P1123 on a BMW, you can perform the following steps:
- Use a diagnostic scanner to retrieve the fault code and any related codes.
- Inspect the wiring and connectors of the pedal position sensor for any visible damage or corrosion.
- Test the pedal position sensor using a multimeter to check for proper voltage readings.
- Check for any loose connections or poor grounds in the sensor circuit.
How to fix DTC P1123 on BMW
To fix the DTC P1123 on a BMW, you can try the following solutions:
- Replace the faulty pedal position sensor with a new one.
- Repair any damaged wiring or connectors in the sensor circuit.
- Clean any corrosion from the sensor connectors and ensure a secure connection.
- If the issue persists, consult a professional mechanic for further diagnosis and repair.
How to erase DTC P1123 on BMW
To erase the DTC P1123 on a BMW, you can use a diagnostic scanner to clear the fault code from the engine control module’s memory. Once the code is cleared, you can drive the vehicle and monitor for any recurrence of the fault code. If the issue persists, further diagnosis may be required.
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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