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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
P3474moderate severityPowertrain

EV/Hybrid Chiller Circuit Performance Low

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

What this code means

The refrigerant-to-coolant chiller that provides supplemental cooling for the battery has reduced performance.

Symptoms

  • Battery temperature higher than expected in warm weather
  • Fast charge speed reduced in heat
  • Active cooling insufficient
  • Compressor running but battery stays warm
  • Range reduced in hot weather

Common causes

  • Low refrigerant charge
  • Chiller heat exchanger fouled
  • Expansion valve malfunction
  • Compressor performance degraded
  • Coolant flow rate to chiller insufficient

Diagnostic steps

  1. Check refrigerant charge level
  2. Monitor chiller inlet and outlet temperatures
  3. Test expansion valve operation
  4. Measure coolant flow through chiller
  5. Check compressor performance

Repair notes

Recharge refrigerant system. Replace chiller, expansion valve, or compressor as needed.

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