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.

This used Side Impact Sensor is designed for deployment control of side airbags and side curtain systems on compatible Citroën and Peugeot models. It registers lateral acceleration impulses and transmits a trigger signal to the airbag control unit when a qualifying side impact is detected. The sensor is an OEM TEMIC type, supplied with reference numbers commonly searched by workshops and DIY mechanics (1400576280, 8216NZ), making it easy to find and replace during collision repairs or when diagnosing airbag faults.

Technical Information

• Manufacturer: TEMIC
• Model: Citroën C2, Citroën C3, Citroën C3 Pluriel, Citroën C8, Peugeot 807
• Product Codes: 1400576280
• Other Numbers: 8216NZ

Function And Fitment

The side impact (lateral) sensor is an acceleration sensor dedicated to detecting rapid lateral deceleration. It communicates directly with the vehicle’s airbag control unit to permit timely deployment of side-impact protection. Typical mounting locations are the B‑pillar inner structure, door inner panel, or seat rail area depending on model and year. Correct orientation and secure mechanical fixation are essential for reliable operation.

Common Failure Causes

• Physical damage from previous collisions—impacts can deform or damage the sensor housing or mounting points.
• Connector corrosion or wiring faults—moisture ingress or abrasion may interrupt the signal path.
• Water ingress—especially on units mounted in door areas or lower pillars, leading to electrical shorting or internal corrosion.
• Incorrect handling during repairs—improper removal or impact to the sensor can alter calibration or break internal components.
• Rarely, electronic component failure due to age or manufacturing defects.

Installation Recommendations

• Always Disconnect The Battery Before Work: Remove the negative terminal and wait at least two minutes (or follow the vehicle manufacturer’s specified delay) to ensure the airbag system is de‑energized.
• Preserve Sensor Orientation: Install the replacement with the same orientation and mounting position as the original—incorrect alignment can prevent correct triggering.
• Use Correct Fasteners And Torque: Secure the sensor to factory torque values where available; avoid over‑tightening which can damage the housing.
• Inspect Wiring And Connectors: Clean or replace corroded connectors and repair damaged wiring to restore reliable communication with the airbag control unit.
• Clear And Verify Fault Codes: After installation, clear airbag system fault codes and perform a diagnostic check with a suitable scanner to confirm system readiness. If warning lights persist, diagnose further before returning the vehicle to service.
• Safety Note: Airbag system work can be hazardous. If unsure, have installation and verification performed by a qualified technician with appropriate diagnostic equipment.

Why Replace This Part

Side impact sensors are replaced primarily after collisions where side airbags deployed or were at risk of deployment, or when the airbag warning lamp indicates a fault traced to the lateral sensor circuit. Replacements are also common when corrosion or connector damage causes intermittent signals or permanent faults. Because these sensors directly affect occupant safety, timely and correct replacement is critical.

Compatibility Notes

The part is listed for multiple Citroën and Peugeot models and is often searched by its product codes 1400576280 and 8216NZ. Sensor variants can differ by side (left/right), production year or trim—always match the exact part number to the vehicle’s repair documentation or parts catalogue before fitting.

This TEMIC side impact sensor (part number 1490426080 / 8216NZ) is an OE‑style crash sensor used on a range of Stellantis Citroën and Peugeot models. Designed for workshop use and competent DIY mechanics, the sensor monitors lateral acceleration and collision forces to trigger side airbags and related restraint systems. Replacement units restore correct crash detection and help clear airbag fault codes when fitted and initialized correctly. Commonly searched by product codes 1490426080 and 8216NZ, this sensor is a frequent service item after side impacts or when the airbag warning light is present.

Technical Information

• Manufacturer: TEMIC
• Model: Citroën C2, Citroën C3, Citroën C3 Pluriel, Citroën C8, Peugeot 1007, Peugeot 807
• Product Codes: 1490426080
• Other Numbers: 8216NZ

Function And Application

The side impact sensor detects rapid lateral acceleration and impact forces. When a side collision is detected, the sensor sends an electronic signal to the airbag control unit to deploy side airbags and activate seatbelt pretensioners if required. Proper operation is critical for occupant protection and to prevent persistent airbag warning lights.

Signs Of A Faulty Sensor

• Illuminated airbag warning light on the dashboard.
• Error codes related to side impact sensors in the airbag control unit.
• Intermittent faults after exposure to moisture or after a previous side impact.

Installation Recommendations

Replacement should be performed by a trained technician or an experienced DIY mechanic familiar with SRS systems. General replacement steps:

• Park the vehicle on a level surface, switch off the ignition and remove the key.
• Disconnect the negative battery terminal and wait several minutes to allow the SRS capacitors to discharge.
• Remove the required interior trim panels (door trim, B‑pillar cover or seat trim) to access the sensor—location varies by model.
• Unplug the electrical connector and remove the fixing bolts or clips securing the sensor.
• Fit the new sensor in the original position, secure with the correct fasteners and reconnect the electrical plug.
• Reassemble trim panels, reconnect the battery and clear airbag fault codes using a diagnostic tool. Verify SRS system status and perform any required sensor initialization as per vehicle manufacturer procedures.

Avoid handling the sensor connector pins roughly and protect the unit from moisture and dirt during installation. Use a scan tool to confirm proper communication with the airbag control module after fitting.

Why These Sensors Fail

• Damage From Side Impact: Direct collision forces can permanently damage the sensor or its mounting.
• Water Ingress And Corrosion: Moisture entering connectors or the sensor housing causes electrical faults.
• Connector Or Wiring Damage: Chafing, broken wires or poor contacts lead to intermittent or permanent failures.
• Aging And Environmental Stress: Long‑term exposure to vibration, temperature cycles and road salts can degrade components.

Replacing the sensor with the correct part number (1490426080 / 8216NZ) and ensuring secure mounting and clean electrical connections will restore reliable crash detection on compatible Citroën and Peugeot models.

This TEMIC side impact sensor is designed for the airbag system on Citroën and Peugeot models. Ideal for professional workshops and DIY mechanics, this sensor is commonly searched under part numbers 1400370180 and 8216NZ. It replaces a failed lateral impact sensor to restore proper SRS (Supplemental Restraint System) function and clear related fault codes.

Fitment

Compatible With (Examples): Citroën C3, Peugeot 1007. Frequently located and ordered by part numbers 1400370180 and 8216NZ. Always confirm vehicle model and equipment level before ordering.

Technical Information

• Manufacturer: Temic
• Model: Side Impact Sensor (Lateral Airbag Sensor)
• Product Codes: 1400370180
• Other Numbers: 8216NZ

Installation Recommendations

Disconnect the negative battery terminal and wait the manufacturer-recommended time before working on the SRS system to avoid accidental deployment. Remove the interior trim panels to access the sensor (typically mounted in the B-pillar area, door end or lower seat base depending on model). Note the sensor orientation and wiring routing, unplug the connector, unfasten the retaining bolts and install the replacement sensor in the same position. Reconnect the electrical connector, reassemble trim, reconnect the battery and clear SRS fault codes with a diagnostic tool. Verify proper system readiness and SRS lamp behavior before returning the vehicle to service.

Common Failure Reasons

Side impact sensors most often fail due to physical damage from a previous collision, corrosion or water ingress at the connector, wiring harness damage, or internal electrical faults. A persistent SRS warning light or stored lateral impact sensor fault code are the usual symptoms indicating replacement is required.

Why Replace This Part

Replacing a faulty side impact sensor restores correct airbag system operation and clears safety-related fault codes. Using the correct part number (1400370180 / 8216NZ) ensures fitment and wiring compatibility for the listed Citroën and Peugeot models, helping maintain occupant protection and passing safety inspections.