Airbag Light

So my airbag light has been on intermittently for months. When i say intermittently, i mean it'll come one (and stay on until you turn the truck off) maybe 1 out of 100 start-ups. I had my truck to my local guy for inspection today and asked if he had a computer that could scan that code even though the light was currently off. He came back with D1630, but long story, wasn't interested in diagnosing further or attempting to fix. He suggested contacting Toyota to see if this might be a recall/warranty. I'll call tomorrow, but i doubt it. it's a 2015 that i bought from a dealer out of the area a year ago. I believe i searched for open recalls when i bought it and didn't find any.
Anyone have any experience with this? (or a link to the site to confirm open recalls)?
I feel like it must be a loose connection since it's so infrequent, and my gut is pointing me to the wiring under the manual drivers seat since my wife and i do change the seat position regularly, but as far as i can tell/see, everything looks proper.

Thanks