P0A0C

High Voltage System Interlock Circuit A Low

Severity

🔴 High

Can you drive?

Do not drive — repair immediately

Approx. repair cost

$17–111 (est.)

Symptoms

Check Engine Light Is On
The car goes into emergency mode
Power Loss
Inability to start the engine
High voltage system error message on dashboard

Causes

Open circuit in high voltage blocking circuit
Poor contact in circuit connectors
Lock sensor malfunction
Wiring harness damage
Problems with the high voltage system control unit

How to Fix

Check the integrity of the high voltage blocking circuit
Inspect and clean all contacts in the circuit
Check the functionality of the blocking sensors
Scan the high voltage system control unit for additional errors
Repair only from an official dealer or specialized service

Related codes

P0A0D P0A0B P0A0A