Airbag warning light

Hi I have recently removed the glovebox aperture and end of dashboard panel with the passenger airbag on/off switch which I unplugged to repair the heater fan, unfortunately now that everything is back in place the airbag light is staying illuminated, I’ve tried switching it off and on but it still doesn’t go out, please does anyone have any idea how to sort this, hopefully without taking it to my local dealer which is a 2 hour round trip, any help with sorting this would be gratefully received.👍 cheers Paul