What are the common causes of P0AE5?

A precharge contactor A that is responding slowly. High resistance in the contactor A control circuit. Low battery voltage slowing precharge. A control module misreading contactor A timing.

Read contactor A command and state on a scan tool. Measure resistance in the contactor A control circuit. Check the battery pack voltage. Measure the contactor A coil resistance. Replace contactor A if the circuit tests good. Clear the code and retest.

P0AE5

Hybrid/EV Battery Precharge Contactor A Control Circuit Range/Performance

System: Powertrain control (P code)
Lamp: Check Engine Light
Category: Powertrain - Hybrid Propulsion

What it means

P0AE5 means Hybrid/EV Battery Precharge Contactor A Control Circuit Range/Performance.

Check these first

A precharge contactor A that is responding slowly
High resistance in the contactor A control circuit
Low battery voltage slowing precharge
A control module misreading contactor A timing

What to do next

Read contactor A command and state on a scan tool
Measure resistance in the contactor A control circuit
Check the battery pack voltage
Measure the contactor A coil resistance
Replace contactor A if the circuit tests good
Clear the code and retest

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Updated

Generic SAE J2012 definition. Last updated 2026-10-10.