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P0A0B Powertrain

High Voltage System Interlock Circuit A Performance

The high-voltage system interlock circuit A reports a performance condition. Safety interlock chain may be compromised.

Affected components

  • Hv interlock circuit a
  • Wiring harness
  • Bms

Common causes

  • High likelihood: Interlock signal drifted
  • Medium likelihood: High-resistance contact in interlock chain

Diagnostic notes

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

Related codes

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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