sounds like they could have damaged some of the wires going on the SRS wheel.
The srs wheel is the black and yellow wheel behind your steering wheel.. it has a ribbon of wires that goes down to a plug under the steering column, and then out to the srs control module, the srs gravity sensors, and that srs junk.

If the ribbon was damaged it would throw the code.

also your airbag could just be faulty, throwing the code, also the gravity sensors under the dash go bad on occasion as well.