So awhile back my car got a light on. I scanned it and it popped up with the P0299 Code or Turbo under boost condition. I looked into it and pretty soon the light went off. I was very happy and about two weeks later it came back. It just went away again and now im confused. It seems this light will come on for a week or two and then go out for a week or two. Car seems to run great. I have tried different grade fuels but the light came on when I had 93 in the car. Anyone know why this happens. Is it just a bad sensor?