P0AE0

Hybrid/EV Battery Negative Contactor Control Circuit High

Severity

🔴 High

Can you drive?

Do not drive — repair immediately

Approx. repair cost

$56–278 (est.)

Symptoms

Hybrid system does not activate
Check Engine light comes on
Reduced power or inability to start
Hybrid system warning
The car goes into emergency mode

Causes

Open or short circuit in the contactor control circuit
Battery negative contactor fault
Problems with the hybrid system control module
Corrosion or poor contact in connectors
Wiring harness damage

How to Fix

Check the integrity of the contactor control circuit
Test the resistance and operation of the contactor
Inspect connectors and wiring harness for damage
Check the voltage at the contactor when turning on the system
Replace faulty contactor or control module

Related codes

P0AE1 P0AE2 P0AE3