Description
Heater servo motor for CITROËN and PEUGEOT vehicles. You may receive a direct replacement. Air conditioning gear motor.
High-quality Valeo heater servo motor designed for precise control of HVAC flaps in Citroën and Peugeot passenger cars. This servo (also referred to as a blend/vent flap motor or HVAC actuator) restores proper air distribution and temperature regulation in the cabin. It is a common aftermarket replacement for worn or noisy original units and is often searched for by its product codes (T1006419G, 0312131B, 6447NL), making it ideal for professional workshops and DIY mechanics who service Stellantis vehicles.
Compatible Models
Commonly fitted to: Citroën C2, Citroën C3, Citroën C4 II, and Peugeot 308. Check the part numbers against your vehicle to confirm fitment.
Function
The servo motor drives the internal HVAC linkages (blend doors and vent flaps), enabling the climate control unit to direct airflow and mix hot/cold air for correct cabin temperature. Proper operation is essential for heating, ventilation, air conditioning, and automatic climate control accuracy.
How Replacement Is Performed
- Disconnect the battery before starting to avoid short circuits and potential damage to electronic components.
- Gain access to the HVAC housing—typically behind the glovebox or lower dash panels depending on the model.
- Remove retaining screws and disconnect the electrical connector from the servo motor.
- Extract the faulty servo, fit the replacement, reconnect the connector and secure with screws.
- Restore battery power and cycle the climate controls to check for correct movement and calibration of flaps. In some HVAC systems, an automatic relearning cycle occurs after power-up; otherwise, perform manual calibration by cycling settings.
Installation Recommendations
Always Disconnect The Battery Before Work. Use correct trim removal tools to avoid breaking plastic panels. Inspect linkage and surrounding components for damage or missing clips when replacing the servo. If you encounter excessive play or noisy gears, replace the linkage clips or the entire actuator assembly as required. After installation, verify full travel of all flaps across heating, cooling, and vent modes.
Why The Part Commonly Fails
Failing servos are usually caused by worn internal gears (plastic teeth wearing or stripping), degraded motor brushes, or contamination from dust and moisture. Heat cycling and frequent actuation over many years accelerate wear. Typical symptoms include clicking noises behind the dash, inability to change vent position or temperature blend, and inconsistent airflow direction.
Technical Information
- Manufacturer: Valeo
- Model: Heater Servo Motor / HVAC Actuator
- Product Codes: T1006419G, 0312131B
- Additional Numbers: 6447NL
Notes For Professionals And Enthusiasts
Part numbers are commonly used to locate correct replacements; keep the original code for cross-reference. This servo is suitable for professional repair shops and capable DIYers. If multiple HVAC symptoms persist after replacement, inspect blend door linkages, vacuum lines (if applicable), and the climate control module for faults.
