Well, I'm now a member of the club. Filled up with gas this morning and pulling out of the station CEL came on. Pulled P0018
Just read all 33 pages of this thread so at least I have a decent idea of where to start. Car is a '13 BRZ w/ 47k miles. I bought it as a certified used subaru so it came with a 7yr/100k powertrain warranty. I'm going to take it to the dealer to see if they will do the repair under warranty or not. If not, guess I'm digging in!