Skoda octavia 2012 mk2 facelift airbag light

Hi 

I Have a skoda octavia 2012 estate 1.6 diesel. The problem is the airbag light has come on from no where and I have no idea what to do with it. I will b honest i cannot afford any expensive repair so please help me . I have a friend who has the small computer he plugged in and is showed this error:

 igniter 1  for passenger airbag -N1 31 -Short circuit to ground

we thought it might be just that i vacum cleaned the car so might be seat moved or something so he cleared it. It stayed off for couple of weeks then came back on then again he cleared the code and now it came back after one day . 

Pleas please help

bundle of thanks