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P0B33 Powertrain

High Voltage Service Disconnect Circuit

The high-voltage service disconnect circuit reports a circuit condition. Safe HV disconnection state cannot be verified.

Affected components

  • Hv service disconnect switch
  • Wiring harness
  • Bms

Common causes

  • High likelihood: Service disconnect switch failed
  • Medium likelihood: Wiring fault

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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