B0001

• The airbag (SRS) light stays on on the dashboard
• The pretensioner or the related airbag may be disabled
• The light may flash after adjusting the seat, fastening the belt or turning the steering wheel

• Poor contact in the airbag / pretensioner connector under the seat (common after the seat has been moved)
• Broken clock spring behind the steering wheel
• Airbag igniter (squib) resistance out of range
• SRS module not reset after a crash, or storing crash data

1. Switch off the ignition, disconnect the battery and wait at least 5 minutes — this step is mandatory before working on SRS circuits.
2. With an SRS-capable diagnostic tool, read the code and which igniter circuit (driver, passenger, pretensioner) it refers to.
3. Check that the yellow SRS connectors under the seats are fully seated and their locking tabs closed.
4. If the code points to the steering wheel side, check whether the horn and steering wheel buttons work — with a clock spring fault they often don't.
5. Check igniter circuit resistance only with the SRS tool's measurement function; never connect a multimeter directly to an airbag.

1. Clean and reseat a loose connector; confirm the light goes out after clearing the code.
2. If the clock spring is faulty, fit a new one while keeping the steering wheel centred.
3. An SRS module storing crash data must be reset or replaced; a deployed airbag and pretensioner must always be replaced.
4. Have SRS repairs done by a shop experienced with airbag systems — incorrect work can cause the airbag to deploy.

• Nissan: Driver Air Bag Module

• B0002Driver Frontal Stage 2 Deployment Control
• B0003Driver Frontal Stage 3 Deployment Control
• B0004Driver Knee Bolster Deployment Control
• B0005Collapsible Steering Column Deployment Control
• B0010Passenger Frontal Stage 1 Deployment Control
• B0011Passenger Frontal Stage 2 Deployment Control

This page is general information; an exact diagnosis needs measurements and a technician’s check.