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P0A0A: High Voltage System Interlock Circuit A

Severity
High
System
Hybrid Powertrain

What Does P0A0A Mean?

P0A0A is a diagnostic trouble code indicating: High Voltage System Interlock Circuit A. This code relates to the hybrid powertrain system. The vehicle's computer detected a condition outside normal operating parameters and stored this code.

Symptoms of P0A0A

Common Causes

Frequently Asked Questions

What does P0A0A mean?
P0A0A indicates: High Voltage System Interlock Circuit A. The vehicle's computer has detected that the High Voltage System Interlock is not operating within its expected parameters and stored this diagnostic trouble code.
Can I drive with code P0A0A?
Only short distances if absolutely necessary. P0A0A affects a critical system and should be diagnosed within a few days to avoid further damage.
How much does it cost to fix P0A0A?
Repair costs for P0A0A typically range from $150 to $500, depending on the root cause. Simple wiring or connector repairs are on the lower end, while component replacement costs more. A proper diagnosis ($80–$150 at most shops) will identify the exact cause before committing to expensive parts.

What To Do Next

Possible Fixes

  • 🔧 Inspect and repair High Voltage System Interlock wiring and connectors
  • 🔧 Replace faulty High Voltage System Interlock
  1. 1
    Find your vehicle above

    Click your make and model for real owner reports and common causes specific to your vehicle.

  2. 2
    Check for recalls

    Go to nhtsa.gov/recalls and enter your VIN. Free repairs if covered.

  3. 3
    Get a professional diagnosis

    A code alone doesn't identify the exact failed part. A diagnostic ($50–$150) pinpoints the root cause.

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