Description
Airbag control unit for Citroën C8 and Peugeot 807. Fully functional.
Product Overview
This airbag (SRS) control unit is designed for Citroën C8 and Peugeot 807 models. The module monitors crash sensors, determines deployment thresholds, controls airbag and seatbelt pretensioner activation, and stores crash-related fault codes in its memory. Technicians and DIY enthusiasts frequently search using part numbers—this listing includes the most common reference codes to help you find the correct unit quickly.
Technical Information
- Manufacturer: Stellantis (Citroën / Peugeot)
- Model: Citroën C8, Peugeot 807
- Product Codes: 1400157980, 654674
- Additional Numbers: 654688, NFP
Compatibility And Fitment
Intended for use on Citroën C8 and Peugeot 807 vehicles. Always verify the part numbers printed on the existing unit—many fitment issues are avoided when part numbers match. This unit is commonly referenced by the listed codes, so searching by those numbers increases the chance of finding the right replacement.
Function And Typical Failure Modes
The airbag control unit (SRS ECU) continuously monitors inputs from impact sensors, seat occupancy sensors and inertial devices. In the event of a qualifying impact, it triggers the appropriate airbags and pretensioners. Because it stores crash data and diagnostic trouble codes, the unit will often signal faults after an accident.
Common reasons the unit fails or is replaced:
- Vehicle involved in a collision—module stores crash data or suffers damage.
- Electrical damage from short circuits, jump-start faults, or battery surges.
- Water ingress or corrosion at connectors causing intermittent signals or permanent faults.
- Physical damage from improper handling during previous repairs or removal.
Replacement Frequency
Airbag control units are designed for long service life and normally do not fail under regular use. Replacement is most commonly required after a collision or following significant electrical damage. If the unit reports persistent SRS faults that cannot be resolved by repairing sensors or wiring, replacement may be necessary.
Installation And Recommendations
Safety is critical when working with SRS systems. Follow these guidelines when replacing the unit:
- Disconnect the vehicle battery before starting work and wait at least 10 minutes (or follow manufacturer-specified wait time) to allow residual system energy to discharge.
- Work in a static-free environment, handle the unit and airbag connectors carefully to avoid damage.
- Remove necessary trim panels and secure fasteners according to the vehicle repair manual to access the module safely.
- After installation, clear stored SRS fault codes and perform a full diagnostic check with a compatible scan tool. If crash data is present, it may need to be cleared according to legal and safety practices in your jurisdiction.
- When in doubt, have the installation and final diagnostic verification performed by an experienced technician with the proper diagnostic equipment for PSA vehicles.
Why This Part Is Frequently Searched By Part Number
Repair shops and DIY mechanics often search by OEM part number to ensure exact compatibility. The codes listed above (1400157980, 654674, 654688) are commonly referenced for Citroën C8 and Peugeot 807 SRS modules, so including them in searches increases the chance of locating a matching unit quickly.
Note For Buyers
This listing states the unit is fully functional as provided in the original description. If you are replacing a module after a collision, ensure all associated sensors, wiring and seatbelt pretensioners are inspected and repaired as necessary before clearing faults and returning the vehicle to service.
