P0AE1

Hybrid/EV Battery Precharge Contactor Circuit

Severity

🔴 High

Can you drive?

Do not drive — repair immediately

Approx. repair cost

$56–222 (est.)

Symptoms

Hybrid system won't start
Check Engine light comes on
The car goes into emergency mode
Hybrid system power reduction
Error message on the dashboard

Causes

Precharge contactor fault
Open or short circuit in control circuit
Problems with the battery control unit
Contact corrosion
Damage to high voltage wires

How to Fix

Check the integrity of the contactor control circuit
Check the resistance of the precharge contactor
Inspect high voltage connections for corrosion
Check the functionality of the battery control unit
Replace faulty precharge contactor

Related codes

P0AE0 P0AE2 P0AE3