Yep. If you hook it to a good scan tool, and go into the SRS or Restraint System (via the OBDII), there should be a code that should tell you specifically what the problem is. It could be any number of things since it's a 'system'. If any of the airbag connectors are loose/damaged, etc, it'll tell you which one (seatbelt/pass airbag, etc). In your case, the problem could be related to the detailing ...or just be a coincidence. SRS connectors and cabling to airbags is yellow, and they're generally very tight locking. But there are modules, etc too. I had a vehicle where a connector at the carpet level near the seat (wires led up to the side air curtain) wouldn't stay locked. Sometimes the connector would work slightly apart. I finally wrapped friction tape tight around it and put a piece of foam to keep it 'tight'. it never loosened again.
It could also be a fuse in the engine bay which either got wet (from detailing), or corroded, or the fuse worked 'up' out of position. There are a number of possibilities, but when the light comes on it'll definitely set a 'code'. So the first thing to check would be to get a scan of the SRS/airbag system. Do this before monkeying with any fuses (which could create no-power codes and throw you off track where to look). If you don't have an appropriate scanner, Autozone or OReilly's should be able to scan it for you. That'll point you in the right direction. Then after that, you can check the fuses. To do that unhook the battery before pulling any SRS-related fuses, which could set a code that the dealer might have to reset, or someone with a really good scanner (that would cost you $$). So, get codes first, unhook battery (and wait like 15 min) BEFORE monkeying with the airbag fuses or any other part of the SRS system.
Good luck
