[RuffianXL]

ok i have a 01 audi a4 i recently put a amp in the car with the stock system as soon as i turned the car on to test the install the airbag light came on i have had it scanned with a vag and the code it gives me is d/s door ignitor, but here is the wierd part my buddy has a passat with is pretty much the same car and his did the same thing , after i had it scanned the and reset the light as soon as i turned the stereo on the a/b light came back what might be causing this to happen and how do i install the amp so it will not cause a issue with the a/b light