Description
Side Impact Sensor (sensor) for Citroën and Peugeot vehicles
High-quality Side Impact Sensor designed for Citroën and Peugeot models. This airbag crash sensor is listed under OEM references 9646768980, 604288200 and variant codes 8216NZ / 8216GH. Intended for professional workshops and experienced DIY mechanics who service occupant protection systems. The sensor restores correct detection of lateral impacts to ensure reliable airbag deployment and resets crash-related fault codes when replaced with proper diagnostic procedures. Frequently searched by part numbers 9646768980, 604288200, 8216NZ and 8216GH.
Technical Information
- Manufacturer: Stellantis (Citroën / Peugeot)
- Model: Citroën C4, Citroën C5, Peugeot 307, Peugeot 407
- Product Codes: 9646768980, 604288200
- Other Numbers: 8216NZ, 8216GH
Function And Application
The side impact sensor monitors lateral acceleration and sends a signal to the airbag control unit when a significant side collision is detected. Its role is critical for triggering side and curtain airbags at the correct time during an impact. These sensors are typically mounted in the B‑pillar, door area, or lower body shell depending on the model and must be installed with correct orientation and secure electrical connections to work reliably.
Compatibility And Fitment
Compatible with selected Citroën and Peugeot models listed above. Always verify the part number printed on the original sensor — customers commonly search using OEM numbers 9646768980 or 604288200 and reference codes 8216NZ / 8216GH to confirm fitment.
Replacement Procedure
- Disconnect the vehicle battery and wait at least 2–10 minutes to allow the airbag system capacitors to discharge (follow vehicle manufacturer recommendations).
- Access the sensor by removing interior trim panels in the B‑pillar or door area; keep fasteners and clips for reinstallation.
- Unplug the electrical connector and remove the sensor mounting screws or bolts.
- Fit the new sensor in the correct orientation, secure fasteners without over‑tightening, and reconnect the electrical connector.
- Reconnect the battery and perform a diagnostic scan. Clear any crash codes and confirm communication between the sensor and the airbag control module.
Installation Recommendations
Install the sensor using correct manufacturer procedures and avoid bending or damaging the connector and wiring harness. Use a compatible diagnostic tool to read and clear fault codes and to verify sensor signals after installation. For Citroën/Peugeot vehicles, use PSA‑compatible diagnostic equipment (DiagBox/Lexia/PP2000) when possible to confirm correct system status. If unsure about airbag system work, have the replacement performed by a qualified technician.
Most Common Cause Of Failure
Side impact sensors normally last the life of the vehicle but can fail after a collision, from water ingress, corrosion, connector damage, or mechanical shock. Faulty wiring, poor grounding or long‑term exposure to moisture are common contributors. After an accident the sensor may be mechanically damaged or its calibration lost, requiring replacement and diagnostic reset.
Why Choose This Part
OE‑reference compatibility and clear product codes make this sensor easy to find and replace. Suitable for professional repairs and quality DIY servicing where correct airbag function is essential. Searching by OEM numbers 9646768980, 604288200, 8216NZ or 8216GH will help you quickly locate the correct unit for Citroën C4, C5 and Peugeot 307, 407 applications.
