I just bought a 2002 Subaru WRX three days ago, I just started getting P0546 after driving it for maybe 500 miles, the scanner says Exhaust Gas Recirculation Temperature Sensor Circuit High (Bank 1). The car has a full Cobb exhaust and I believe that it has a high flow cat. From what I can tell without touching the car, I have a gauge in the car that should read my EGT and the plug looks like it goes to the uppipe, but its been unplugged from the pipe and bunged up. I don't know if I'm getting false readings, or if there's a whole other sensor I can't even see, but if it helps any, I've also been getting the code P0457 Evaporative Emission Control System -Leak Detected. Maybe they could be related, please help, I've read that this could have potential to destroy my turbo and I just got the car.