My airbag warning light came on the other day so when i had my alt pulley change my mech friend hooked it up to his snap on diagnostics and it said something along the lines of 'drivers side airbag-igniting limit reached-intermittent' It was reset and the light stayed off for a day then ping its back on.

I know i prob should get it checked over with a VAGCOM system to get a code, i can remember N75 (maybe).
Is it just a case of checking all the wires to the drivers side airbag or does the igniting bit narrow it down for me?

Does this sound serious as i know Audi will charge a fortune to investigate and i know from experience airbags ain't cheap?

Thanks

Mark