BMW DTC P1B04 – Drive Motor ‘B’ Position Sensor Circuit No Signal
DTC P1B04 meaning on BMW
The DTC P1B04 code on a BMW indicates a fault in the Drive Motor ‘B’ Position Sensor Circuit, specifically signaling that there is no signal being received from the sensor.
BMW DTC P1B04 symptoms
Symptoms of the BMW DTC P1B04 code may include:
- Check Engine Light illuminated
- Loss of power or acceleration
- Unusual noises coming from the drive motor
BMW DTC P1B04 causes
Common causes of the BMW DTC P1B04 code include:
- Failed Drive Motor ‘B’ Position Sensor
- Wiring or connection issues in the sensor circuit
- Faulty control module
BMW DTC P1B04 seriousness
The DTC P1B04 code should be addressed promptly as it can lead to drivability issues and potential further damage if left unresolved.
How to diagnose DTC P1B04 on BMW
To diagnose the DTC P1B04 code on a BMW, you can:
- Use a diagnostic scanner to retrieve the fault codes and data
- Inspect the Drive Motor ‘B’ Position Sensor and its wiring for any visible damage
- Test the sensor’s resistance and signal output
How to fix DTC P1B04 on BMW
To fix the DTC P1B04 code on a BMW, you may need to:
- Replace the Drive Motor ‘B’ Position Sensor if it is faulty
- Repair any damaged wiring or connections in the sensor circuit
- Reset the fault codes and test drive the vehicle to ensure the issue is resolved
How to erase DTC P1B04 on BMW
To erase the DTC P1B04 code on a BMW, you can:
- Use a diagnostic scanner to clear the fault codes
- Ensure that the underlying issue causing the code has been addressed
- Perform a test drive to confirm that the code does not return
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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