Originally Posted by Pseudo Nim
This is not quite correct. It throws a code "exhaust flap is open" or something (I don't have it on me now, but you can see it with the BT tool) but it also says "CEL light will NOT turn on", so it's not a major code. I've had it open for about 7 months now, quite lovin' it, and the last time I went to the dealer, they even updated my software (i.e. they certainly saw the code) and didn't care.
So I checked again and I can't find any codes or info for this actuator. Attached are the pics from Auterra Dyno Scan. Maybe auterra doesn't detect it but I'm certain if there was a code stored in computers memory then it would show up as I have tested many cars with this software. Anyway I thought I just post this.