P0A0A

High Voltage System Interlock Circuit A

Severity

🔴 High

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$56–278 (est.)

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

P0A0B P0A0C P0A0D