Back to 2012 Toyota Highlander

2012 TOYOTA HIGHLANDER

3.3L V6 HybridAWDAUTOMATIChybrid
2 active safety recalls on this vehicle — view recalls
Repairs0Labor635Torque3678Fluid9DTC906Battery0Maintenance0Recalls2
P3206critical severityPowertrain

HV Battery Vent System Malfunction

on 2012 Toyota Highlander 3.3L V6 Hybrid · AWD

What this code means

The HV battery venting system that releases gases in case of cell failure is malfunctioning. This is a critical safety system.

Symptoms

  • Battery vent warning
  • Vehicle may enter safe mode
  • HV system may be disabled
  • Unusual odor from battery area
  • Warning message on dashboard

Common causes

  • Vent duct obstructed
  • Vent valve stuck
  • Vent sensor failure
  • Vent path damaged in collision
  • Debris blocking vent outlet

Diagnostic steps

  1. Check battery vent sensor status
  2. Inspect vent path for obstructions
  3. Test vent valve operation
  4. Check vent outlet for blockage
  5. Inspect vent duct routing

Repair notes

Clear vent path obstruction. Replace vent valve or sensor if faulty. CRITICAL SAFETY SYSTEM - must function correctly to prevent gas buildup.

Other Powertrain codes on this vehicle

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