BMW DTC P0B02 – Electric/Auxiliary Transmission Fluid Pump Motor Phase U Current High
DTC P0B02 meaning on BMW
The DTC P0B02 fault code on BMW vehicles indicates an issue with the Electric/Auxiliary Transmission Fluid Pump Motor Phase U Current being too high. This fault code is specific to the electric auxiliary transmission fluid pump motor and its associated electrical circuit.
BMW DTC P0B02 symptoms
Symptoms of the BMW DTC P0B02 fault code may include:
- Check Engine Light (MIL) illuminated on the dashboard
- Transmission shifting issues
- Reduced fuel efficiency
- Vehicle may go into limp mode
BMW DTC P0B02 causes
Common causes of the BMW DTC P0B02 fault code include:
- Failed electric auxiliary transmission fluid pump motor
- Wiring or connector issues in the motor’s electrical circuit
- Internal motor faults
BMW DTC P0B02 seriousness
The DTC P0B02 fault code should be addressed promptly as it can lead to transmission performance issues and potentially cause further damage if left unresolved. Ignoring this fault code may result in more severe transmission problems and increased repair costs.
How to diagnose DTC P0B02 on BMW
To diagnose the DTC P0B02 fault code on a BMW, a mechanic would typically perform the following steps:
- Use a diagnostic scanner to retrieve the fault code and related data
- Inspect the electric auxiliary transmission fluid pump motor and its wiring for any visible damage
- Test the motor’s electrical connections and components for proper voltage and continuity
- Perform a functional test of the motor to determine if it is operating correctly
How to fix DTC P0B02 on BMW
To fix the DTC P0B02 fault code on a BMW, the following steps may be taken:
- Replace the electric auxiliary transmission fluid pump motor if it is found to be faulty
- Repair any damaged wiring or connectors in the motor’s electrical circuit
- Clear the fault code from the vehicle’s ECU memory after the repair is completed
- Perform a test drive to ensure the fault code does not return and that the transmission functions properly
How to erase DTC P0B02 on BMW
To erase the DTC P0B02 fault code on a BMW, the fault code can be cleared using a diagnostic scanner or by disconnecting the vehicle’s battery for a few minutes. However, it is important to address the underlying issue causing the fault code before clearing it to prevent it from reoccurring.
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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