OBD Guide

P0AE2

Hybrid/EV Battery Precharge Contactor Circuit Stuck Closed

Severity
🔴 High
Can you drive?
Do not drive — repair immediately
Approx. repair cost
$56–167 (est.)

Symptoms

  • The hybrid system does not turn off when the ignition is turned off
  • Warning messages on the dashboard
  • Reduced performance of the hybrid system
  • Battery charging problems
  • Unusual sounds from the engine compartment

Causes

  • Mechanical contactor jamming
  • Control relay malfunction
  • Wiring harness damage
  • Short circuit in the circuit
  • Problems with the hybrid system control module

How to Fix

  1. Check the condition of the pre-charge contactor
  2. Check the integrity of the control circuit
  3. Check relay functionality
  4. Diagnose the hybrid system control module
  5. Replace faulty contactor

Related codes

Error P0AE2 by Vehicle Brand