BMW DTC P0B48 – Hybrid/EV Battery Voltage Sense ‘C’ Circuit High
DTC P0B48 meaning on BMW
DTC P0B48 on a BMW indicates an issue with the Hybrid/EV Battery Voltage Sense ‘C’ Circuit being too high. This fault code is specific to hybrid or electric vehicles and relates to the voltage sensing circuit for the high-voltage battery pack.
BMW DTC P0B48 symptoms
Symptoms of DTC P0B48 on a BMW may include warning lights on the dashboard related to the hybrid or electric system, reduced electric driving range, and potential drivability issues. The vehicle may also enter a reduced power mode to prevent further damage.
BMW DTC P0B48 causes
The high voltage sense circuit ‘C’ can have an elevated voltage due to various reasons such as a faulty voltage sensor, wiring issues, or problems within the battery management system. Corrosion or poor connections can also lead to this fault code.
BMW DTC P0B48 seriousness
DTC P0B48 should be taken seriously as it directly relates to the high-voltage system of the vehicle. Ignoring this fault code can lead to further damage to the hybrid or electric components and potentially pose a safety risk.
How to diagnose DTC P0B48 on BMW
To diagnose DTC P0B48 on a BMW, a diagnostic scan tool capable of reading hybrid or electric vehicle codes is needed. The technician will inspect the high-voltage battery voltage sensor, check the wiring for any damage, and test the battery management system for proper operation.
How to fix DTC P0B48 on BMW
Fixing DTC P0B48 on a BMW involves addressing the root cause of the high voltage sense circuit issue. This may include replacing the faulty voltage sensor, repairing any damaged wiring, or recalibrating the battery management system. It is recommended to consult a professional mechanic with experience in hybrid or electric vehicles for proper diagnosis and repair.
How to erase DTC P0B48 on BMW
Once the underlying issue causing DTC P0B48 on a BMW has been resolved, the fault code can be cleared using a diagnostic scan tool. The technician can erase the code, and if the problem has been successfully fixed, the warning lights should no longer reappear 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
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