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P0A0A Powertrain

High Voltage System Interlock Circuit

The hybrid system detects loss of high-voltage interlock continuity. The interlock loop is a safety feature that disables HV power if any service connector is opened.

Affected components

  • Hv interlock loop
  • Hv service connector
  • Hv battery

Common causes

  • High likelihood: Service connector loose or damaged
  • Medium likelihood: HV cable damaged

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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