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2025 FORD F-150
3.5L V6 PowerBoost Hybrid•4WD•AUTOMATIC•hybrid•turbo
12 active safety recalls on this vehicle — view recalls
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Repairs0Labor505Torque148Fluid10DTC1896Battery1Maintenance0Recalls12
P3292high severityPowertrain

HV System Voltage Sag Under Load

on 2025 Ford F-150 3.5L V6 PowerBoost Hybrid · 4WD

What this code means

The HV bus voltage drops excessively under high-current load conditions, indicating high internal resistance in the battery or connection path.

Symptoms

  • Reduced acceleration under load
  • Momentary power cutbacks
  • Voltage warning under hard acceleration
  • Reduced fast-charging acceptance
  • Performance inconsistent
  • Power limit kicks in early

Common causes

  • Battery internal resistance elevated
  • HV bus connection resistance high
  • Battery cell degradation
  • Contactor contact resistance increased
  • HV cable connection loose

Diagnostic steps

  1. Monitor HV bus voltage during high-load events
  2. Compare loaded vs unloaded voltage
  3. Test battery internal resistance
  4. Inspect HV bus connections and torque
  5. Check contactor contact resistance

Repair notes

Tighten HV bus connections to specification. Replace battery modules with elevated internal resistance. Replace contactors if contact resistance is high.

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