Description
Interior Air Temperature Sensor / Evaporator Probe
This used Interior Air Temperature Sensor (Evaporator Probe) is suitable for a range of Citroën and Peugeot HVAC systems. Commonly referenced under part numbers 105133044B and 6445JW, the sensor monitors the temperature around the evaporator and inside the cabin to ensure accurate climate control regulation. Ideal for professional mechanics and DIY enthusiasts looking to replace a faulty cabin temperature probe on Citroën Xsara Picasso, Peugeot 206 and Peugeot 307 vehicles.
Function And Benefits
The sensor measures air temperature near the evaporator or inside the passenger compartment and feeds this data to the HVAC control unit. Accurate readings allow the climate system to regulate blower speed, compressor cycling and cabin temperature precisely. Replacing a worn sensor restores correct temperature display, improves automatic climate control response and can prevent unnecessary compressor cycling.
Symptoms Of A Faulty Sensor
- Incorrect cabin temperature reading on the climate display.
- Erratic air conditioning behavior or poor temperature regulation.
- Constant compressor engagement or failure to switch on/off properly.
- Intermittent HVAC faults or stored error codes related to interior temperature sensor.
Why This Part Fails
Failures are usually caused by moisture ingress and condensation in the evaporator area, corrosion of contacts, mechanical damage to the probe or connector, and wiring deterioration. Long-term exposure to humidity and road contaminants accelerates wear, especially in vehicles with heavy air conditioning use.
Technical Information
- Manufacturer: Stellantis (Citroën / Peugeot)
- Model: Citroën Xsara Picasso; Peugeot 206; Peugeot 307
- Product Codes: 105133044B; 6445JW
- Additional Numbers: 105133044; 6445JW
Replacement And Installation Recommendations
Location And Access: The evaporator probe is typically located in or near the evaporator housing inside the dashboard or behind the glovebox. Access usually requires removal of the glovebox or lower dash trim and possibly part of the HVAC housing. Exact location varies by model.
Step-By-Step Tips:
- Disconnect The Battery Before Starting Work To Avoid Short Circuits And Protect The Vehicle Electronics.
- Remove The Necessary Trim Or Glovebox To Reach The Evaporator Housing.
- Carefully Unplug The Electrical Connector And Remove The Old Probe From Its Holder Or Clip.
- Compare New Sensor With Old Unit For Correct Shape And Connector Type Before Installing.
- Insert The Probe Securely Into The Mounting Clip Or Grommet, Ensuring Correct Orientation.
- Reconnect The Connector Firmly; Apply A Small Amount Of Dielectric Grease If Desired To Protect Contacts From Moisture.
- Reassemble Trim Panels And Reconnect The Battery. Verify HVAC Operation And Temperature Readings.
Estimated Labor: Replacement is typically 0.5–2.0 hours depending on vehicle model and access complexity. Professional diagnostic equipment can help confirm correct operation after installation.
Search Tips For Parts And Compatibility
When searching, use the OE references 105133044B and 6445JW and include vehicle model names (Citroën Xsara Picasso, Peugeot 206, Peugeot 307) to improve results. The sensor is commonly listed under Interior Temperature Sensor, Evaporator Probe, Cabin Temperature Sensor or HVAC Probe.
Why Choose This Part
Replacing a failing interior temperature sensor is a cost-effective way to restore proper HVAC function and cabin comfort. This part is suitable for workshop replacement or competent DIY installation and is a frequent upgrade when climate control faults or incorrect temperature readings are present.
