Description
Heating and air conditioning control for Peugeot 807 and Citroën C8 up to 2005.
Description
This climate control unit (heater and A/C controller) is designed for Peugeot 807 and Citroën C8 models produced up to 2005. It replaces the dashboard control module that manages temperature selection, blower speed, airflow distribution and air conditioning engagement. Frequently searched by part numbers such as 14874990YR and 9140010393, this unit is suitable for professional workshops and DIY mechanics looking for a direct-fit replacement.
Applications
- Peugeot 807 (models up to 2005)
- Citroën C8 (models up to 2005)
Function
The control unit provides the user interface for the vehicle HVAC system: it regulates blower motor speed, temperature blend (mechanical or electronic actuator depending on trim), air distribution (windscreen/face/feet), recirculation mode and A/C compressor request. It converts user inputs into control signals for actuators, relays and the vehicle climate system.
Technical Information
- Manufacturer: Stellantis (Citroën/Peugeot)
- Model: Peugeot 807 / Citroën C8 (up to 2005)
- Product Codes: 14874990YR, 9140010393
- Additional Numbers: 6451KJ, 6451KK, NFP
Installation Recommendations
Follow these guidelines to ensure a safe and correct replacement:
- Disconnect the vehicle battery before starting work to avoid short circuits and to protect electronic modules.
- Remove surrounding trim panels and center console pieces carefully to avoid breaking clips.
- Unscrew the retaining screws of the control unit and gently pull the unit forward to access the electrical connectors.
- Release all connector latches and remove the unit. Inspect connectors for corrosion or bent pins and clean if necessary.
- Fit the replacement unit, reconnect connectors, reassemble trim and reconnect the battery. Verify all HVAC functions (blower, temperature change, A/C engagement, recirculation) before road use.
- Avoid touching circuit board components or connectors with bare hands and keep the unit away from moisture during installation.
Replacement Procedure (Quick Steps)
- Disconnect Battery.
- Remove Trim And Screws Holding Control Unit.
- Disconnect Electrical Connectors.
- Install New Unit And Reconnect Connectors.
- Reassemble Trim And Reconnect Battery.
- Test All HVAC Functions.
Why This Part Fails Most Often
- Wear On Electrical Contacts Or Potentiometers: Frequent use causes carbon tracks and rotary switches to degrade, leading to intermittent or lost functions.
- Dust And Debris Ingress: Accumulated dirt can affect switches and moving parts inside the control unit.
- Moisture Or Liquid Spills: Exposure to moisture or spilled liquids from cups can corrode contacts and damage internal electronics.
- Thermal Stress And Age: Prolonged heat cycles and age-related material fatigue cause connectors and components to fail, especially on older vehicles.
- Connector Corrosion: Poor contact at the harness plugs leads to intermittent operation or total failure.
Notes For Mechanics And DIYers
This part is commonly referenced by its product numbers during ordering and diagnostics — including 14874990YR and 9140010393. When replacing, inspect actuator cables and related HVAC motors as faults in those components can mimic a faulty control unit. After installation, run a full HVAC check to confirm proper interaction between the new control unit and vehicle actuators.
