the other day I was driving down 285, and accelerated to about 85 or so, when a check engine light came on. When I checked the code, it gave a P1259. During the same day, my oil light flashed for a second(changed my oil the next day). I also changed my intake filter last week, and it was a little loose when I opened the hood, so i tightened the clamp. Any idea what this could be?