Had that one come on a lot last year. Turns out some Kias (and Hyundais) burn oil. A lot of oil. They’ll replace them under warranty, but the car has to be burning more than 1 quart every 1,000 miles to qualify. I started checking it on my own and it was progressively getting worse, but when it finally reached the point where it was burning over that level it just killed the engine altogether a couple days later.