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.

Product Overview

This multifunction sensor is designed for Citroën C8 and Peugeot 807 vehicles and is commonly used inside the HVAC/climate control system to provide accurate cabin environment data. The unit improves automatic climate regulation, supporting comfortable interior temperature control and reliable operation of the air conditioning system. Ideal for professional mechanics and experienced DIYers who service Stellantis vehicles.

Key Features And Benefits

• Direct-fit replacement for original equipment on applicable Citroën and Peugeot models.
• Improves responsiveness and stability of automatic climate control.
• Often searched and identified by part numbers 1489150080 and 6445QX—useful for quick lookup.
• Compact design for simple integration into existing sensor mounts and wiring harnesses.

Applications

Designed for Citroën C8 and Peugeot 807 models (commonly fitted on model years 2002–2014). Typically installed in the dashboard or inlets related to the HVAC system to measure cabin conditions used by the vehicle’s climate logic.

Installation

Replacement is straightforward for a trained technician or competent DIYer with basic tools. Typical steps:

• Disconnect the vehicle battery before starting work to avoid short circuits and control module issues.
• Remove the relevant dashboard trim or ventilation grille to access the sensor location (location varies by model and trim).
• Unplug the electrical connector and remove the sensor from its mounting (clip or screw, depending on version).
• Install the new sensor, secure the mounting, reconnect the harness and reassemble the trim.
• Reconnect the battery and verify proper operation of the climate control (automatic mode) and that there are no error codes related to the sensor circuit.

Installation Recommendations

• Use appropriate trim tools to avoid damage to dashboards and clips.
• Check connector terminals for corrosion before fitting; clean if necessary to ensure solid electrical contact.
• After installation, run the climate system through automatic cycles to confirm stable temperature regulation.

Why The Part Fails

Failures are typically caused by long-term exposure to moisture, contamination or dirt ingress, connector corrosion, thermal stress, or internal electronic component degradation. Mechanical damage during previous servicing or impact to the dash area can also affect sensor function. Symptoms of failure include incorrect cabin temperature readings, poor automatic climate control performance, or related HVAC fault codes.

Technical Information

• Manufacturer: Stellantis (Citroën/Peugeot)
• Model: Citroën C8; Peugeot 807
• Product Codes: 1489150080, 6445QX
• Other Numbers: NFP

Notes For Professionals

This sensor is frequently identified by its part numbers when ordering or searching in catalogs. Ensure correct part number and sensor variant before installation, as HVAC sensor housings and connectors can vary by trim or equipment level.