Description
Interior Air Temperature Sensor for Citroën and Peugeot Vehicles
This interior air temperature sensor (part number 6445XF) is designed for Citroën and Peugeot HVAC systems to provide accurate cabin temperature readings for climate control. It is a direct-fit electrical sensor used by technicians and DIY enthusiasts to restore correct automatic climate regulation and to eliminate incorrect temperature display or poor cabin comfort.
Product Overview
The sensor measures the temperature of the air inside the passenger compartment and feeds that information to the vehicle’s HVAC control unit. When the sensor operates correctly, the climate control system can regulate blower speed, blend doors and refrigerant flow to maintain the selected cabin temperature. Faulty or intermittent sensors commonly cause incorrect cabin temperature readings, erratic automatic climate control behaviour or constant heating/cooling cycles.
Technical Information
- Manufacturer: Stellantis / Citroën & Peugeot
- Model: Peugeot 307 (other Citroën and Peugeot models may use compatible sensors)
- Product Codes: 6445XF
- Additional Numbers: –
Function And Symptoms
The interior air temperature sensor provides real-time temperature feedback to the HVAC module. Common symptoms of a failing sensor include incorrect temperature readout on the dash, poor automatic climate control regulation (cab temperature too hot or too cold compared with set value), continuous fan operation, or the HVAC system switching between heating and cooling unexpectedly.
Why This Part Most Commonly Fails
- Moisture ingress or condensation inside the sensor housing leading to corrosion or short circuits.
- Contamination from dust, debris or cigarette smoke accumulating on the sensing element and affecting response.
- Connector corrosion or broken wiring in the harness causing intermittent signals.
- Mechanical damage during dashboard work or improper handling.
- Age-related drift of the sensing element after many years in service.
Replacement And Installation
Replacing the cabin temperature sensor is generally straightforward for experienced mechanics and competent DIYers. Typical steps:
- Locate the sensor—most commonly mounted in the HVAC housing inside the dashboard or behind the glove box near the evaporator housing.
- Disconnect the vehicle battery before starting to avoid short circuits while working on electrical components.
- Remove any trim, glove box or dash panels required to access the sensor. Carefully unclip the sensor from its holder.
- Disconnect the electrical connector and replace the sensor with the new unit (observe connector orientation).
- Reassemble panels, reconnect the battery and verify proper HVAC operation and temperature readout.
Installation Recommendations
- Use basic trim tools to avoid damaging dash panels and clips.
- Inspect the connector and wiring for corrosion or damage; clean contacts if necessary before fitting the new sensor.
- After replacement, allow the HVAC system to run through a few automatic cycles to confirm stable readings.
- If the climate control still behaves incorrectly after replacement, check related sensors and the HVAC control unit for faults.
Notes For Mechanics And DIYers
Search by the OE code 6445XF when sourcing the part to ensure correct fitment. The sensor is a low-cost repair that often restores proper automatic climate control function and improves cabin comfort. For fault diagnosis, check wiring continuity and connector condition before replacing the sensor to avoid unnecessary parts replacement.
Keywords
Interior Air Temperature Sensor, Cabin Temperature Sensor, 6445XF, Citroën Sensor, Peugeot Sensor, HVAC Sensor, Peugeot 307, Cabin Temp Sensor Replacement
