Santa Fe (DM - 2013+) :: P2098 Code Came On

My wife bought a brand new 2014 Santa Fe (with the V6 and 3rd row seating) and has been driving it for a little over a year (a little over 15k miles). Today when she left work, the blue link popped up on the screen and said for her to press the call button, the check engine light came on and she also said the a/c quit blowing cold air and was just blowing hot air. She pulled over and called me instead. While she waited on me, she said it continued to blow hot air, so she cut the vehicle off. When I got there, I couldn't see anything visually wrong with it. Coolant level was fine. Oil level was fine. The drive belt was fine...nothing wrong. I started it up and the check engine light came back on, but no blue link. Everything seemed fine, so I drove it home and she drove my car home. It ran fine all the way back. Nothing wrong but a check engine light on. I put my code reader on it and showed a P2098. I googled it and it showed this...

P2098 Hyundai - Post Catalyst Fuel Trim System Too Lean Bank 2

Possible causes
- Low fuel pressure
- Engine misfire
- Large vacuum leak
- Blocked converter
- Faulty O2 sensor bank 2

...now with this being a fairly new vehicle, I can't really see any of these things being the problem. She is due an oil change, so we will have them check it out when we get that done in a couple days. I already checked the gas cap and I haven't cleared the code, just so the dealership can see it for warranty purposes.