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2017 FORD EXPLORER
2.3L I4 EcoBoost•AWD•AUTOMATIC•gas•turbo
14 active safety recalls on this vehicle — view recalls
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Repairs1Labor484Torque2274Fluid9DTC1911Battery1Maintenance0Recalls14
P3805moderate severityPowertrain

48V Battery Temperature Sensor Circuit Malfunction

on 2017 Ford Explorer 2.3L I4 EcoBoost · AWD

What this code means

The 48V lithium-ion battery temperature sensor is reporting values outside the expected range.

Symptoms

  • 48V system may be limited
  • Charging/discharging restricted as precaution
  • Inaccurate temperature reading
  • Mild hybrid functions intermittent
  • 48V battery warning

Common causes

  • Temperature sensor failure
  • Sensor wiring open or shorted
  • Connector corrosion
  • Sensor out of calibration
  • Thermal paste degradation on sensor

Diagnostic steps

  1. Read 48V battery temperature PID
  2. Compare to infrared temperature measurement
  3. Test sensor resistance vs specification
  4. Inspect sensor connector
  5. Check wiring for damage

Repair notes

Replace 48V battery temperature sensor. Ensure proper thermal contact with battery cells.

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