Airbag ignitor code

ok my air bag light came on awhile ago, i figured it was the connectors for the module under the seat little alot of the others with the same problem lol, boy was i wrong had a friend scan it with vag-com came up with a driver door ignitor code, well we reset the light and erased the code started the car it was the a-bag light was off 2 min later i start the car it came right back on now im lost it sends the same code but im sure it's not the ignitor itself but i could be wrong, what can i loof for that may be sending the light off and the same repeat code and also if i need to replace the ignitor has anyone ever bought one and what did it cost  

Id check wiring to the door and the module first, could be loose or corroded.  Idk how to get there since i only have the seat airbags with the wires under the seat.  A seat side airbag was 300 bux i believe new.  Dont take it to the dealer they will automatically replace the airbag have someone else look at the wiring first or look at it yourself.