well i was driving down the road today and out of nowhere my abs and brake lights pop on on the dash and the dic says service brake system or something like that. then about a half mile later, the engine goes into reduced power mode. so i stop and shut it off and sit for a minute and turn it back on and the brake lights are off and the cel is on but no reduced power. so i start driving again and about a mile or two later it goes back into reduced power mode. so i shut if off and sit and then turn it back on to just a cel. it does this one more time on my way back home. the brake stuff hasen't come back on yet. any clues what might be going on? its an 03 btw if that makes any kind of difference. all stock drivetrain with about 72k miles