BMW DTC P1B23 – Hybrid/EV Battery Pack Voltage Sense ‘H’ Circuit Range/Performance
DTC P1B23 meaning on BMW
DTC P1B23 on a BMW indicates an issue with the Hybrid/EV Battery Pack Voltage Sense ‘H’ Circuit Range/Performance. This fault code is related to the voltage sensing circuitry of the hybrid or electric vehicle battery pack.
BMW DTC P1B23 symptoms
Symptoms of DTC P1B23 on a BMW may include:
- Check Engine Light (MIL) illuminated
- Hybrid/EV system warning light on
- Reduced hybrid or electric drive performance
- Possible inability to start the vehicle
BMW DTC P1B23 causes
Common causes of DTC P1B23 on a BMW include:
- Faulty voltage sensor in the battery pack
- Wiring or connection issues in the voltage sensing circuit
- Hybrid/EV battery pack malfunction
BMW DTC P1B23 seriousness
The seriousness of DTC P1B23 on a BMW depends on the underlying cause. Ignoring this fault code can lead to further damage to the hybrid or electric vehicle system, potentially resulting in drivability issues or even safety concerns.
How to diagnose DTC P1B23 on BMW
To diagnose DTC P1B23 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 voltage sensing circuit for any visible damage or loose connections
- Test the voltage sensor in the battery pack for proper operation
- Check the hybrid/EV battery pack for any signs of malfunction
How to fix DTC P1B23 on BMW
Fixing DTC P1B23 on a BMW may involve the following steps:
- Repair or replace any damaged wiring or connections in the voltage sensing circuit
- Replace the faulty voltage sensor in the battery pack, if necessary
- If the hybrid/EV battery pack is malfunctioning, it may need to be repaired or replaced
- Clear the fault code and reset the system
How to erase DTC P1B23 on BMW
To erase DTC P1B23 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 and fix 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
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.