Description
Evaporator temperature sensor for Citroën and Peugeot vehicles.
This evaporator temperature sensor (part number 6445KP) monitors the temperature of the evaporator core inside the HVAC unit and provides the climate control module with the data needed to regulate compressor cycling and prevent evaporator icing. It is an OEM‑style replacement suitable for professional workshops and experienced DIYers looking to restore reliable air‑conditioning and accurate cabin temperature control.
Technical Information
- Manufacturer: Stellantis (Citroën/Peugeot)
- Model: Citroën Berlingo B9; Citroën Berlingo III; Citroën C‑Elysée; Citroën C4 Picasso; Citroën C8; Peugeot 301; Peugeot 807; Peugeot Partner III; Peugeot Partner Tepee
- Product Codes: 6445KP
- Other Numbers: N/A
Function And Typical Fault Symptoms
The sensor is usually a thermistor that changes resistance with temperature and allows the climate control unit to:
- Prevent Evaporator Freezing By Modulating Compressor Operation.
- Maintain Stable Cabin Temperature And Accurate Climate Control.
When the sensor fails or provides incorrect readings, common symptoms include:
- Intermittent Or Complete Loss Of Air‑Conditioning Cooling.
- Evaporator Icing Or Frosting Causing Reduced Airflow.
- Erratic Cabin Temperature Or Poor Temperature Regulation.
- Compressor Cycling Or Unusual A/C Cycling Behaviour.
- HVAC Fault Codes Related To Temperature Sensor/Input.
Installation Recommendations
- Work Safely: Switch Ignition Off Before Starting Work.
- Access: The Sensor Is Located In The HVAC/Evaporator Housing Behind The Glovebox Or Lower Dash Trim; Remove Trim Panels Or Glovebox To Reach The Housing.
- Disconnect: Unplug The Electrical Connector And Release Any Retaining Clip Or Grommet Holding The Sensor.
- Remove: Pull The Sensor Straight Out; Inspect And Replace Any O‑Ring Or Seal If Present.
- Fit New Sensor: Ensure Correct Seating And Secure The Retaining Clip; Reconnect The Connector Firmly.
- Verify: Start The Vehicle, Run The Climate System And Check For Proper Operation. Clear Any Stored HVAC Fault Codes If Required And Confirm No Recurrence.
- Note: In Most Models Replacement Is Performed From The Interior And Does Not Require Discharging The Refrigerant Circuit.
- Tip: Inspect Connector Contacts And Wiring For Corrosion Or Damage; Applying A Small Amount Of Dielectric Grease On The Connector Can Improve Long‑Term Reliability.
Common Causes Of Failure
- Moisture Ingress Leading To Corrosion Of The Sensor Or Connector.
- Connector Or Wiring Damage Due To Vibration, Rodent Activity Or Previous Repairs.
- Physical Damage During Removal Or Reassembly Of Dash Components.
- Ageing And Drift Of The Thermistor Element Resulting In Inaccurate Readings.
Often Searched By Part Number 6445KP — This sensor is ideal as a direct replacement when HVAC symptoms point to a faulty evaporator temperature measurement. For professional installers and knowledgeable DIYers it offers a straightforward repair that typically restores correct climate control behaviour.
