P0B97 – BMW DTC

BMW DTC P0B97 – Hybrid/EV Battery Voltage Sense ‘S’ Circuit Low

DTC P0B97 meaning on BMW

The Diagnostic Trouble Code (DTC) P0B97 for BMW indicates an issue with the Hybrid/EV Battery Voltage Sense ‘S’ Circuit being detected as low. This code is specific to hybrid and electric vehicles and relates to the voltage sensing circuitry of the high-voltage battery system.

BMW DTC P0B97 symptoms

Symptoms of the BMW DTC P0B97 may include:

• Check Engine Light (MIL) illuminated
• Hybrid/EV system warning light on
• Reduced hybrid/EV system performance
• Possible inability to start the vehicle

BMW DTC P0B97 causes

Common causes of the BMW DTC P0B97 may include:

• Faulty voltage sensor
• Wiring or connection issues in the voltage sense circuit
• High-voltage battery pack issues
• Software glitches in the hybrid/EV system

BMW DTC P0B97 seriousness

The seriousness of the BMW DTC P0B97 code lies in the potential impact on the hybrid/EV system’s performance and safety. Ignoring this code can lead to further damage to the high-voltage battery system and may result in the vehicle being inoperable.

How to diagnose DTC P0B97 on BMW

To diagnose the DTC P0B97 on a BMW, you can follow these steps:

1. Use a diagnostic scanner to retrieve the specific fault codes
2. Inspect the high-voltage battery system for any visible damage or loose connections
3. Check the voltage sensor and related wiring for continuity and proper operation
4. Perform a battery system test to assess the overall health of the high-voltage battery pack

How to fix DTC P0B97 on BMW

To fix the DTC P0B97 on a BMW, you may need to:

1. Replace the faulty voltage sensor if found defective
2. Repair any damaged wiring or connections in the voltage sense circuit
3. Address any issues with the high-voltage battery pack as necessary
4. Update the hybrid/EV system software to the latest version

How to erase DTC P0B97 on BMW

To erase the DTC P0B97 on a BMW, you can:

1. Use a diagnostic scanner to clear the fault codes
2. After fixing the underlying issue, perform a system reset to ensure 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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