P0AE0
Hybrid/EV Battery Negative Contactor Control Circuit High
P0AE0 is an OBD-II diagnostic trouble code meaning: Hybrid/EV Battery Negative Contactor Control Circuit High. Common causes: open or short circuit in the contactor control circuit, battery negative contactor fault. Estimated repair cost: $56–278.
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
Error P0AE0 by Vehicle Brand
FAQ
What does the P0AE0 code mean?
P0AE0 is an OBD-II diagnostic trouble code that indicates: Hybrid/EV Battery Negative Contactor Control Circuit High
What causes a P0AE0 error code?
The most common causes of P0AE0 include: 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.
How do I fix a P0AE0 diagnostic trouble code?
To fix P0AE0: Check the integrity of the contactor control circuit. Test the resistance and operation of the contactor. Inspect connectors and wiring harness for damage. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P0AE0?
Do not drive — repair immediately
How much does it cost to fix P0AE0?
The estimated repair cost for P0AE0 is $56–278. Actual cost depends on your vehicle, location, and labor rates.
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