P0AE4

Hybrid/EV Battery Precharge Contactor A Control Circuit/Open

Severity

🔴 High

Can you drive?

Do not drive — repair immediately

Approx. repair cost

$56–278 (est.)

Symptoms

Check Engine light comes on
Hybrid system power reduction
The car goes into emergency mode
Inability to start the electric motor
Error message on the dashboard

Causes

Open contactor control circuit
Precharge contactor fault
High Voltage Relay Problems
Malfunction of the hybrid system control module
Corrosion or poor contact in connectors

How to Fix

Check the integrity of the contactor control circuit
Check the resistance and operation of the precharge contactor
Inspect connectors and connections for corrosion
Check high voltage relay
Diagnose the hybrid system control module
Repair only from an authorized dealer

Related codes

P0AE5 P0AE3 P0AE6