Description
Airbag control unit for CITROËN C1 and PEUGEOT 107. The unit is fully functional, not deployed.
High-quality replacement SRS (Supplemental Restraint System) control unit compatible with Citroën C1 and Peugeot 107 models. This airbag control module monitors crash sensors, seatbelt pretensioners and triggers airbag deployment when required. Suitable for professional workshops and experienced DIY mechanics who need a reliable unit bearing original part numbers. Supplied unit is functional and ready to install, helping to restore correct airbag system operation and clear related fault codes when properly installed and initialized.
Technical Information
- Manufacturer: Stellantis (Citroën / Peugeot)
- Model: Citroën C1, Peugeot 107
- Product Codes: 89170-0H050, 6546F6
- Other Numbers: NFP
Function And Fitment
The SRS control unit (airbag ECU) continuously monitors crash sensors, airbag modules and seatbelt pretensioners. On detecting a crash event that meets deployment criteria it triggers the appropriate restraints. It also stores fault codes and crash event data used by diagnostic tools. This unit is designed to fit the platform shared by Citroën C1 and Peugeot 107 models; ensure the part numbers match your vehicle’s existing unit before installation.
Replacement Procedure
General replacement steps (for experienced technicians):
- Disconnect the negative battery terminal and wait at least 10 minutes to allow residual energy in the SRS capacitors to dissipate.
- Remove necessary trim and access panels to reach the airbag control unit (typically located under the center console or behind the glovebox on small city-car platforms).
- Carefully unplug airbag and sensor connectors using the correct tools; avoid pulling on wiring.
- Unbolt the unit and replace with the supplied module, securing it with original fasteners.
- Reconnect connectors and reassemble interior trim.
- Use an appropriate diagnostic tool to clear SRS fault codes and verify system status. Perform a full SRS system check after installation.
Installation Recommendations
Always follow manufacturer safety procedures. Wear appropriate protective equipment, disconnect the battery before starting, and observe recommended wait times to prevent accidental deployment. Use a professional diagnostic tool to clear codes and validate the system after installation. If you are not fully experienced with SRS systems, have the unit fitted and checked by a qualified technician to ensure safety.
Most Common Causes Of Failure
Airbag control units do not usually fail without cause. Typical reasons for replacement include:
- Airbag deployment during a collision—after a deployment the unit normally requires replacement.
- Electrical damage such as short circuits or voltage spikes.
- Water ingress or corrosion affecting connectors and electronics.
- Physical damage from improper removal/installation or prior repair attempts.
- Stored crash/event data or persistent fault codes indicating the module is no longer reliable.
This unit matches the listed OEM part numbers for Citroën C1 and Peugeot 107. For best results install using correct procedures and verify SRS functionality with a diagnostic scanner after fitting.
