Description
Interior Temperature and Humidity Sensor for Citroën and PEUGEOT vehicles
Product Overview
This interior temperature and humidity sensor is designed for Citroën and Peugeot models and helps the climate control accurately monitor cabin conditions. Ideal for professional workshops and DIY mechanics, the sensor restores proper automatic HVAC regulation when the original unit becomes faulty. It is commonly searched by OEM references, making this listing useful when replacing a defective cabin sensor.
Function And Location
The sensor measures cabin air temperature and relative humidity and provides data to the vehicle’s climate control module so it can adjust heating, ventilation and air conditioning (HVAC) performance. On Citroën and Peugeot vehicles it is typically installed behind the dashboard near the centre vents or close to the A/C control unit where it samples cabin air. Proper placement ensures accurate readings and efficient climate regulation.
Symptoms Of A Faulty Sensor
- Inaccurate cabin temperature readings or sudden changes in reported temperature.
- Automatic climate control not maintaining set temperature or oscillating between heating and cooling.
- Increased cabin condensation or dehumidification issues.
- Fault indication related to the climate system on the instrument cluster or HVAC unit (diagnostic trouble codes may be present).
Installation Recommendations
- Disconnect the battery before starting work to avoid electrical short circuits and to protect vehicle electronics.
- Carefully remove the necessary dashboard trim panels to access the sensor—avoid forcing clips to prevent breakage.
- Unplug the electrical connector, remove the old sensor and install the replacement in the correct orientation. Ensure the connector and housing are clean and dry before reassembly.
- Reassemble trim panels, reconnect the battery and allow the climate control to complete any self-calibration routines if applicable.
- After replacement, verify proper operation by setting the climate control to automatic mode and confirming steady temperature regulation.
Most Common Cause Of Failure
Cabin sensors usually fail due to moisture ingress, dirt or contamination, connector corrosion, or intermittent wiring faults. Physical damage from improper removal or impact behind the dash can also cause failure. Environmental exposure over many years accelerates degradation, leading to incorrect readings and HVAC performance issues.
Technical Information
- Manufacturer: Stellantis (Citroën / Peugeot)
- Model: Citroën C2, Citroën C3, Citroën C3 Pluriel, Citroën C5 II, Citroën C6, Citroën C8, Xsara, Xsara Picasso; Peugeot 307, Peugeot 407, Peugeot 607, Peugeot 807
- Product Codes: 9637937380, 6445HT
- Other Numbers: 52513D, NFP
Additional Notes For Professionals
This sensor is a direct-replacement component frequently cross-referenced by its OEM numbers. When diagnosing climate control faults, check connector integrity and wiring continuity before replacing the sensor to avoid unnecessary parts replacement. Use proper trim tools to prevent damage to dash panels and retention clips.
