What are the common causes of P0AE6?

A short to ground in the contactor A control circuit. Low voltage at precharge contactor A. A failed precharge contactor A coil. A weak hybrid battery dropping pack voltage.

Command contactor A on and read circuit voltage. Check the contactor A control circuit for a short to ground. Measure the contactor A coil resistance. Check the hybrid battery state of charge. Replace contactor A if the circuit tests good. Clear the code and retest.

P0AE6

Hybrid/EV Battery Precharge Contactor A Control Circuit Low

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

What it means

P0AE6 means Hybrid/EV Battery Precharge Contactor A Control Circuit Low.

Check these first

A short to ground in the contactor A control circuit
Low voltage at precharge contactor A
A failed precharge contactor A coil
A weak hybrid battery dropping pack voltage

What to do next

Command contactor A on and read circuit voltage
Check the contactor A control circuit for a short to ground
Measure the contactor A coil resistance
Check the hybrid battery state of charge
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.