Description
Interior Air Temperature Sensor For PEUGEOT 308 T7 And Citroën C3 Picasso. Evaporator Sensor.
Overview
This Valeo interior air/evaporator temperature sensor (part numbers T1000210Q / 643665) is designed for climate control systems in selected Stellantis models. It monitors the temperature of the air in the HVAC evaporator or the vehicle interior and supplies the climate control unit with accurate readings to regulate heating, ventilation and air conditioning (HVAC) performance. The sensor is commonly used by professional technicians and DIY mechanics as a direct replacement when the cabin temperature regulation becomes inconsistent.
Key Benefits
- Direct Fit For Specified Models: Manufactured to match the original equipment form, fit and function.
- Improves Climate Control Accuracy: Restores correct temperature sensing for efficient A/C and heating cycles.
- Easy Diagnostics: Frequently identified and ordered by part numbers T1000210Q and 643665.
- Durable Design: Built to withstand cabin conditions, including temperature cycling and humidity.
Technical Information
- Manufacturer: Valeo
- Model: Peugeot 308 T7; Citroën C3 Picasso
- Product Codes: T1000210Q, 643665
- Additional Numbers: Commonly Cross-Referenced Under The Above Codes
Installation Recommendation
Replacement typically requires access behind the glovebox or removal of lower dashboard trim to reach the evaporator housing or sensor mounting point. Basic installation steps used by professionals and experienced DIYers:
- Ensure The Vehicle Is Stationary And The Ignition Is Off. For General Safety, Disconnect The Negative Battery Terminal When Working On Electrical Components.
- Remove Any Trim Or Glovebox Panels To Gain Access To The Sensor Location. Keep Screws And Clips Organized.
- Unplug The Electrical Connector From The Sensor And Release Any Retaining Clips Or Fasteners.
- Remove The Old Sensor Carefully To Avoid Damaging Surrounding Ducting Or Evaporator Fins.
- Fit The New Sensor, Secure Fasteners, Reconnect The Electrical Connector And Reassemble Panels.
Typical Time: 30–90 Minutes Depending On Access And Experience. Required Tools: Trim Tools, Torx/Screwdriver Set, Socket Set, Multimeter For Basic Verification.
Note: In Most Cases The Sensor Is Plug And Play And Does Not Require Coding. After Installation, Verify Proper Operation By Observing HVAC Behavior And Temperature Readings From The Climate Control System.
Why The Part Fails Most Often
Common Failure Modes:
- Water Ingress Or Condensation Causing Connector Corrosion Or Sensor Drift.
- Age-Related Wear And Thermal Cycling Resulting In Inaccurate Readings.
- Physical Damage During Previous Repairs Or From Vibrations And Impact.
- Contamination From Debris Or Dust Inside The Evaporator Housing Affecting Thermal Contact.
Symptoms Of A Failing Sensor Include Inaccurate Cabin Temperature Indication, Improper A/C Cycling, Long Run Times To Reach Set Temperature Or Reduced Comfort Control Efficiency.
Compatibility And Ordering
This Sensor Is Frequently Searched By Part Numbers T1000210Q And 643665. Confirm Fitment Against Vehicle Model And Production Year When Ordering Replacement Parts. The Unit Is Intended For The Listed Peugeot 308 T7 And Citroën C3 Picasso Applications.
Final Notes
Designed For Professional Use And Confident DIY Replacement, This Replacement Sensor Restores Reliable Temperature Feedback To The HVAC Control System, Helping Maintain Optimal Cabin Comfort And Efficient A/C Operation.
