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P3805

48V Battery Temperature Sensor Circuit Malfunction

2015-2021 Kia Sedona 3.3L V6

Moderate SeverityPowertrainGeneric (SAE)

Description

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.

Related Codes

P380048V Mild Hybrid System General MalfunctionP380148V Battery State of Charge Low

Other Powertrain Codes

P3805 on Other Vehicles

Common Questions

What does code P3805 mean on a 2015-2021 Kia Sedona?

P3805 stands for "48V Battery Temperature Sensor Circuit Malfunction". The 48V lithium-ion battery temperature sensor is reporting values outside the expected range.

What are the symptoms of P3805 on a Kia Sedona?

Common symptoms of P3805 include: 48V system may be limited, Charging/discharging restricted as precaution, Inaccurate temperature reading, Mild hybrid functions intermittent, 48V battery warning.

What causes P3805 on a 2015-2021 Kia Sedona?

Common causes of P3805 include: Temperature sensor failure, Sensor wiring open or shorted, Connector corrosion, Sensor out of calibration, Thermal paste degradation on sensor.

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