Description
Interior Air Temperature Sensor for Citroën and Peugeot Vehicles.
This interior air temperature sensor (often searched under code 6445YY) is designed for Citroën and Peugeot HVAC systems and helps the climate control regulate cabin temperature accurately. Ideal for professional garages and DIY mechanics, the unit restores correct temperature readings that influence automatic climate control behavior, reducing uncomfortable temperature swings and unnecessary compressor cycling. The compact sensor is a direct-fit replacement for the original equipment on compatible models and is commonly referenced by its product code, making it easy to find and order.
Technical Information
Manufacturer: Stellantis (Citroën / Peugeot)
Model: Citroën C5 X7; Peugeot 307; Peugeot 407
Product Codes: 6445YY
Additional Numbers: 6445YY (OE Reference)
Compatibility
Fits vehicles from the PSA/Stellantis group that use the 6445YY interior air temperature sensor. Commonly installed in Citroën C5 X7 and mid-2000s Peugeot 307 and 407 models. Always check the part code (6445YY) against the vehicle ordering information when searching.
How To Replace
- Switch Off Ignition And Climate Control: Ensure ignition is off and the HVAC unit is idle.
- Access The Sensor: Remove the dashboard trim or glovebox as required to reach the HVAC intake area or sensor housing—location may vary by model.
- Disconnect The Connector: Carefully unplug the electrical connector; avoid pulling on wires.
- Remove The Sensor: Release any retaining clips and extract the sensor from its mounting slot.
- Install New Sensor: Insert the replacement until it seats fully and secure clips. Reconnect the electrical connector.
- Reassemble And Test: Refit trims, switch on the ignition and run the climate control to verify correct temperature response and sensor behavior.
Installation Recommendations
Handle The Sensor With Care: Avoid touching the sensing element directly. Ensure connectors are clean and free of corrosion. If access requires removing airbags or major trim pieces, follow manufacturer safety procedures. After installation, allow the climate control to complete a few minutes of normal operation to confirm stable readings. Replace any damaged clips or seals to prevent air leaks that can affect sensor performance.
Common Failure Causes
The most frequent reasons for sensor failure are moisture ingress, dust contamination, wiring or connector corrosion, and deterioration from long-term thermal cycling. Symptoms include incorrect cabin temperature readings, erratic climate control behavior, longer heating or cooling times, and increased compressor cycling. Faults are often first noticed as poor automatic climate control regulation rather than a complete electrical failure.
Choose the correct 6445YY interior air temperature sensor to restore reliable climate control performance. Suitable for workshops and competent DIY installers who need a fast, code-searchable replacement part for Citroën and Peugeot vehicles.
