New to the sight and need some information I own a 2003 Tundra Limited 4x4. A week ago I got the Check Engine light and borrowed a tester from a friend and got a p0442 and p0456 along with the words emission leak (very small). I cleared them to see what would happen and a couple of days later the light is back with the same codes. I have an appointment with the dealer on thursday the 5th of July and don't want to get taken too bad. Any help would be greatly appreciated.