BMW DTC P271B – Park Pawl Position Sensor ‘A’ Circuit High
DTC P271B meaning on BMW
DTC P271B indicates a fault with the Park Pawl Position Sensor ‘A’ circuit in a BMW vehicle. The Park Pawl Position Sensor is responsible for detecting the position of the transmission’s park pawl, which is engaged when the vehicle is in the parked position. A high circuit voltage is being detected in this case, suggesting a potential issue with the sensor or its wiring.
BMW DTC P271B symptoms
Symptoms of DTC P271B in a BMW may include:
- Check Engine Light illuminated on the dashboard
- Difficulty shifting gears
- Transmission slipping or jerking
- Vehicle not engaging properly in park mode
BMW DTC P271B causes
Common causes of DTC P271B in a BMW include:
- Faulty Park Pawl Position Sensor ‘A’
- Wiring issues in the sensor circuit
- Corrosion or poor connections in the sensor circuit
BMW DTC P271B seriousness
DTC P271B should not be ignored as it can lead to potential transmission issues and affect the drivability of the vehicle. It is recommended to address this fault promptly to prevent further damage and ensure safe operation of the vehicle.
How to diagnose DTC P271B on BMW
To diagnose DTC P271B on a BMW, you can follow these steps:
- Use a diagnostic scanner to retrieve the fault code and related data
- Inspect the Park Pawl Position Sensor ‘A’ and its wiring for any visible damage or corrosion
- Test the sensor’s resistance and voltage output to determine if it is functioning correctly
- Check for any loose connections or poor grounds in the sensor circuit
How to fix DTC P271B on BMW
To fix DTC P271B on a BMW, you can try the following solutions:
- Replace the faulty Park Pawl Position Sensor ‘A’ with a new one
- Repair or replace any damaged wiring in the sensor circuit
- Clean any corrosion or debris in the sensor connector
- Clear the fault code and reset the Check Engine Light using a diagnostic scanner
How to erase DTC P271B on BMW
To erase DTC P271B on a BMW, you can use a diagnostic scanner to clear the fault code from the vehicle’s memory. Once the issue has been addressed and fixed, you can reset the Check Engine Light and ensure that the fault code does not reappear during subsequent driving cycles.
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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