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P0BBD Powertrain

Hybrid Battery Voltage Sense Internal Module Performance

The BMS detects implausible cell module voltage readings during balancing or load test, indicating sense circuit drift or cell defect.

Affected components

  • Bms
  • Hv battery

Common causes

  • High likelihood: Defective cell in module
  • Medium likelihood: BMS sense circuit drift
  • Low likelihood: Module software outdated, reflash may resolve

Diagnostic notes

  • The malfunction indicator lamp may illuminate
  • Reduced-power or limp mode may occur

Sources

Diagnostic information is provided for reference only. Confirm the code with a compatible scan tool and follow the vehicle manufacturer's service procedures before replacing components.

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