Description
Side impact sensor for airbag for Citroën and Peugeot vehicles.
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.
