P0A0A
High Voltage System Interlock Circuit A
P0A0A is an OBD-II diagnostic trouble code meaning: High Voltage System Interlock Circuit A. Common causes: open circuit in high voltage blocking circuit, short circuit in wiring. Estimated repair cost: $56–278.
Symptoms
- Check Engine light comes on
- Reduced vehicle power
- Inability to start the high voltage system
- Warning message on dashboard
- Limitation of hybrid system operation
Causes
- Open circuit in high voltage blocking circuit
- Short circuit in wiring
- Malfunction of the high voltage system connector
- Wiring harness damage
- Problems with the high voltage system control unit
How to Fix
- Check the integrity of the high voltage blocking circuit
- Inspect connectors and connections for damage
- Check the resistance in the interlock circuit
- Scan for additional trouble codes
- Replace damaged components if necessary
Related codes
Error P0A0A by Vehicle Brand
FAQ
What does the P0A0A code mean?
P0A0A is an OBD-II diagnostic trouble code that indicates: High Voltage System Interlock Circuit A
What causes a P0A0A error code?
The most common causes of P0A0A include: Open circuit in high voltage blocking circuit; Short circuit in wiring; Malfunction of the high voltage system connector; Wiring harness damage.
How do I fix a P0A0A diagnostic trouble code?
To fix P0A0A: Check the integrity of the high voltage blocking circuit. Inspect connectors and connections for damage. Check the resistance in the interlock circuit. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P0A0A?
Limited driving only, diagnose soon
How much does it cost to fix P0A0A?
The estimated repair cost for P0A0A is $56–278. Actual cost depends on your vehicle, location, and labor rates.
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