Description
Interior Air Temperature Sensor for Citroën and Peugeot vehicles
This interior air temperature sensor (OE code 6445XF) is a direct-fit replacement designed for Citroën and Peugeot climate control systems. It measures cabin temperature for the HVAC control unit, ensuring accurate automatic climate regulation, improved passenger comfort and efficient air conditioning operation. The unit is commonly searched by part number 6445XF and is suitable for a range of Stellantis vehicles, including models such as the Peugeot 307.
Why This Sensor Matters
The cabin temperature sensor provides the HVAC control module with real-time interior temperature data. Accurate readings allow the automatic climate system to modulate blower speed, blend doors and compressor engagement to reach and maintain the set temperature. A faulty sensor causes poor climate regulation, uneven cabin temperatures and can increase compressor runtime or fuel consumption.
Technical Information
- Manufacturer: Stellantis
- Model: Citroën, Peugeot (Examples: Peugeot 307)
- Product Codes: 6445XF
- Additional Numbers: Not Provided
Installation Recommendations
Replacement is straightforward for experienced technicians and competent DIYers. Typical steps:
- Locate the sensor—usually mounted in the dashboard air duct, behind a center vent or inside the passenger-side console depending on model.
- Disconnect the negative battery terminal before beginning work to avoid short circuits and protect vehicle electronics.
- Remove the trim or vent cover to access the sensor; unplug the electrical connector and unclip or unscrew the sensor from its housing.
- Install the new sensor (align clips or thread), reconnect the connector and refit the trim. Reconnect the battery and check climate system operation.
Typical tools needed: trim tools, small screwdriver set and basic hand tools. Allow approximately 20–60 minutes depending on access and model.
Reason Why The Part Fails Most Often
Cabin temperature sensors usually fail due to moisture ingress, corrosion at the electrical connector, physical damage from improper removal or prolonged exposure to dust and contaminants in the ventilation system. Sensor drift (loss of calibration) can also occur with age, causing inaccurate temperature reporting. Faulty wiring or a loose connector will produce intermittent readings or complete failure.
Fault Symptoms
Common signs of a failing cabin temperature sensor include: unstable or incorrect cabin temperatures, HVAC system blowing constantly or not reaching set temperature, and error codes related to the climate control sensor in diagnostic checks.
Notes for Professional Use
This is an aftermarket replacement intended for direct replacement in compatible Citroën and Peugeot vehicles. The part is often identified and ordered by OE code 6445XF—include this reference when searching parts lists or diagnostic data to speed up identification.
Additional Tips
- When replacing the sensor, inspect wiring harness and connector for corrosion or damage and repair as needed to prevent repeat failure.
- After installation, verify operation using the vehicle’s climate control diagnostics or by observing system behavior at different temperature setpoints.
