Maybe a connector got wet cleaning? Let it dry and maybe you’ll get lucky
I doubt its the air bag computer as well but I guess we don’t know. Used to be able to get both bags and the computer as a set for less than a $100 from yards and eBay, I’ve rebuilt some wrecked ones in the past and there isn’t much to it. Supply is way outstripping demand by this point should be some inexpensive sets.
If it’s wiring that’ll be a 4 digit debacle at the dealer and good chance they get it wrong the first time. They wouldn’t even take a 98 seriously around here, they probably haven’t seen one in at least 5 years, some of the techs have probably never worked on one. Haha.