Description
Interior Air Temperature Sensor
Evaporator Probe
This interior air temperature sensor (evaporator probe) is designed for climate control systems in a range of Citroën and Peugeot models. It measures the temperature of the air passing through the evaporator/HVAC housing and provides a voltage signal to the HVAC control module to regulate heating, ventilation and air conditioning performance. The part is commonly searched for by its product numbers and is a direct fit for many Stellantis vehicles.
Key Features And Benefits
Designed For Professional Mechanics And DIY Enthusiasts. Restores Accurate Cabin Temperature Sensing For Reliable Climate Control. Compact, Plug‑In Design For Straightforward Replacement. Compatible With Models Where The Sensor Is Located In The Evaporator Or HVAC Airbox.
Function And Symptoms
The sensor senses air temperature near the evaporator or inside the HVAC unit and sends that information to the climate control module. When it fails or gives incorrect readings, common symptoms include incorrect cabin temperature, poor air conditioning or heating regulation, AC cycling unusually, longer run times to reach set temperature, or error codes related to the HVAC temperature sensor. Diagnosing should include inspection of the sensor, connector and wiring harness before replacing the unit.
Technical Information
- Manufacturer: Stellantis
- Model: Citroën Xsara Picasso, Peugeot 206, Peugeot 307
- Product Codes: 105133044 B 6445JW
- Additional Numbers: No Additional Numbers Provided
Installation Recommendations
- Disconnect The Battery Before Starting Work To Avoid Short Circuits And Protect Vehicle Electronics.
- Access The Sensor Via The Glove Box Or Lower Dashboard Panels Depending On Model; Some Vehicles Require Partial HVAC Housing Removal To Reach The Evaporator Probe.
- Handle The Sensor And Connector Carefully To Avoid Damaging The Thermistor Element Or Wiring. Ensure Connector Pins Are Clean And Free Of Corrosion.
- After Installation, Verify Connector Is Fully Seated And Secure Wiring To Prevent Rubbing Or Chafing.
- Test The Climate Control Operation And Observe Temperature Response; Use A Multimeter Or Diagnostic Tool To Confirm Sensor Signal If Needed.
Most Common Failure Causes
- Moisture And Condensation Leading To Corrosion Of Connector Or Sensor Element.
- Physical Damage During Previous Repairs Or From Debris Within The HVAC Housing.
- Age‑Related Degradation Of The Thermistor Element Causing Drift Or Intermittent Readings.
- Wiring Harness Damage Or Poor Electrical Connections Producing Erratic Signals.
Fitment And Search Tips
Customers Often Find This Part By Searching Product Numbers (105133044, 6445JW) Or By Vehicle Model (Citroën Xsara Picasso, Peugeot 206, Peugeot 307). When diagnosing climate control issues, check sensor readings and connector condition first; replacing the sensor typically resolves incorrect cabin temperature reports and improves AC/Heater regulation.
Notes For Professionals
Replace The Sensor With The Correct Part Number To Ensure Proper Fit And Electrical Characteristics. When Working Near Airbag Systems Or Complex Dashboard Assemblies, Follow Manufacturer Service Procedures To Avoid Injury Or Additional Damage.
