2000 disco 2

Just recently my disco 2 the check engine light came on for a day then then went away.Now i can drive for about a mile and a half then it shuts off with no warning. It has to sit for about 15 minutes then it will start back up. It doesnt over heat and everything but the air ride works perfect any ideas on what the stalling problem could be?

CPS Crank Pos sensor or Cam Pos sensor. any codes???