Code result

P0A0A

High Voltage System Interlock Circuit

High severity

What it means

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.

Is it safe to drive?

No — stop driving

This code can put the vehicle into limp or reduced-power mode. Avoid extended driving and have the vehicle diagnosed promptly.

Most likely causes

  • Service connector loose or damaged

    high

    One of the most commonly reported causes for this code — check this first.

  • HV cable damaged

    medium

    A plausible cause — test and verify before replacing parts.

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