48V Battery Temperature Sensor Circuit Malfunction
2016-2019 Ford Explorer 3.5L V6
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
- Read 48V battery temperature PID
- Compare to infrared temperature measurement
- Test sensor resistance vs specification
- Inspect sensor connector
- Check wiring for damage
Repair Notes
Replace 48V battery temperature sensor. Ensure proper thermal contact with battery cells.
Related Codes
Other Powertrain Codes
- P0001Fuel Volume Regulator Control Circuit/Open
- P0001Fuel Volume Regulator Control Circuit/Open
- P0002Fuel Volume Regulator Control Circuit Range/Performance
- P0002Fuel Volume Regulator Control Circuit Range/Performance
- P0003Fuel Volume Regulator Control Circuit Low
- P0003Fuel Volume Regulator Control Circuit Low
- P0004Fuel Volume Regulator Control Circuit High
- P0004Fuel Volume Regulator Control Circuit High
- P0010Intake Camshaft Position Actuator Circuit/Open Bank 1
- P0010Intake Camshaft Position Actuator Circuit/Open Bank 1
P3805 on Other Vehicles
Ford Bronco
2021-2024 2.3L I4 EcoBoost
Ford Bronco
2021-2024 2.7L V6 EcoBoost
Ford Bronco Raptor
2022-2024 3.0L V6 EcoBoost
Ford Bronco Sport
2021-2024 1.5L I3 EcoBoost
Ford Bronco Sport
2021-2024 2.0L I4 EcoBoost
Ford E-350
1997-2024 6.8L V10 Triton
Ford E-350
2020-2024 7.3L V8 Godzilla
Ford Edge
2015-2018 2.0L I4 EcoBoost
Common Questions
What does code P3805 mean on a 2016-2019 Ford Explorer?
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 Ford Explorer?
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 2016-2019 Ford Explorer?
Common causes of P3805 include: Temperature sensor failure, Sensor wiring open or shorted, Connector corrosion, Sensor out of calibration, Thermal paste degradation on sensor.