hi all i have a 93 wrx running approx 300bhp all has been well for months now until this morning i was driving off boost doing a steady 70 when the "check engine" light came on. I pulled over checked everythin was ok and set off again the light never came back on. After work i was travelling back home again at a steady 70 and the damn light came back on, I pressed the accel and the light went straight back off and again didn't come back on all the way home. The car seems to be boosting fine and no loss of power. Does anyone have any idea what this could be??