BMW DTC P0B79 – Hybrid/EV Battery Voltage Sense ‘M’ Circuit Low
DTC P0B79 meaning on BMW
The Diagnostic Trouble Code (DTC) P0B79 for BMW indicates an issue with the Hybrid/EV Battery Voltage Sense ‘M’ Circuit being detected as low. This code specifically relates to the voltage sensing circuit within the hybrid or electric vehicle battery system.
BMW DTC P0B79 symptoms
Symptoms associated with DTC P0B79 on a BMW may include:
- Check Engine Light (MIL) illuminated
- Hybrid/EV system warning light on
- Reduced hybrid or electric vehicle performance
- Possible inability to start the vehicle
BMW DTC P0B79 causes
Common causes of DTC P0B79 on a BMW include:
- Issues with the voltage sensing circuit
- Wiring or connection problems in the battery system
- Hybrid/EV battery pack issues
- Problems with the battery management system
BMW DTC P0B79 seriousness
The seriousness of DTC P0B79 on a BMW should not be ignored, as it can lead to potential performance issues and safety concerns with the hybrid or electric vehicle system. It is recommended to address this code promptly to prevent further complications.
How to diagnose DTC P0B79 on BMW
To diagnose DTC P0B79 on a BMW, a thorough inspection of the hybrid or electric vehicle battery system is necessary. Steps for diagnosis may include:
- Using a diagnostic scanner to retrieve the specific fault codes
- Inspecting the voltage sensing circuit for any visible damage or loose connections
- Testing the battery pack and related components for proper functionality
- Checking the battery management system for any faults
How to fix DTC P0B79 on BMW
To fix DTC P0B79 on a BMW, the following steps may be taken:
- Repair or replace any damaged wiring or connections in the voltage sensing circuit
- Address any issues with the hybrid or electric vehicle battery pack
- Ensure the battery management system is functioning correctly
- Clear the fault codes and reset the system after repairs
How to erase DTC P0B79 on BMW
To erase DTC P0B79 on a BMW, follow these steps:
- Use a diagnostic scanner to clear the fault codes
- Ensure that the underlying issue causing the fault code has been addressed
- Perform a test drive to confirm that the code does not reappear
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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