BMW DTC P0B29 – Hybrid/EV Battery ‘B’ Voltage Low
DTC P0B29 meaning on BMW
The Diagnostic Trouble Code (DTC) P0B29 for BMW indicates that there is a low voltage condition detected in the ‘B’ battery of the hybrid or electric vehicle system.
BMW DTC P0B29 symptoms
Symptoms of the DTC P0B29 on a BMW may include:
- Reduced electric driving range
- Decreased hybrid system performance
- Warning lights on the dashboard
BMW DTC P0B29 causes
Common causes of the DTC P0B29 on a BMW include:
- Weak or failing hybrid/EV battery
- Issues with the battery management system
- Charging system malfunctions
BMW DTC P0B29 seriousness
The DTC P0B29 should be addressed promptly as it can lead to reduced performance and efficiency of the hybrid or electric vehicle system. Ignoring this code may result in further damage to the vehicle’s battery system.
How to diagnose DTC P0B29 on BMW
To diagnose the DTC P0B29 on a BMW, a mechanic may perform the following steps:
- Use a diagnostic scanner to retrieve the specific fault codes
- Inspect the hybrid/EV battery for any visible damage or leaks
- Check the battery voltage levels using specialized equipment
- Test the battery management system for faults
How to fix DTC P0B29 on BMW
To fix the DTC P0B29 on a BMW, the following steps may be taken:
- Replace the faulty hybrid/EV battery if necessary
- Repair or replace any damaged wiring or connectors related to the battery system
- Address any issues with the battery management system
- Perform a thorough inspection and testing of the charging system
How to erase DTC P0B29 on BMW
To erase the DTC P0B29 on a BMW, a mechanic can use a diagnostic scanner to clear the fault codes after the underlying issue has been resolved. This will reset the system and turn off the warning lights on the dashboard.
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
Some of the links on this page may be affiliate links, which means we may earn a small commission if you make a purchase. This helps us keep our DTC database up to date and provide valuable content for free. We only recommend products that we have tested and believe to be the best in their class.