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2011 LEXUS LS 600H
5.0L V8 Hybrid•AWD•AUTOMATIC•hybrid
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Repairs0Labor487Torque2158Fluid8DTC1893Battery1Maintenance0Recalls0
P3421moderate severityPowertrain

Charge Port Locking Actuator Malfunction

on 2011 Lexus LS 600h 5.0L V8 Hybrid · AWD

What this code means

The charge port locking mechanism that secures the charging connector during a charge session is not functioning properly.

Symptoms

  • Unable to lock charging connector
  • Charging connector falls out
  • Unable to remove connector after charging
  • Charge session will not start (safety interlock)
  • Charge door warning light

Common causes

  • Lock actuator motor failure
  • Lock mechanism jammed
  • Actuator wiring fault
  • Charge port assembly damage
  • Ice or debris in lock mechanism

Diagnostic steps

  1. Command lock/unlock via scan tool
  2. Inspect lock mechanism for obstruction
  3. Test actuator motor operation
  4. Check actuator wiring
  5. Try manual release mechanism

Repair notes

Replace charge port lock actuator or clean mechanism. Emergency manual release cable can be used as temporary measure.

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