EXUP Trouble

A while back, I had put an aftermarket exhaust on my WR. I recently decided to put the stock muffler back on, as I got tired of the noise. I put the stocker back on, hooked the EXUP valve, but now I get error code 17, and the valve seems to do nothing. The electrical connector seems fine, and I even hosed it down with some contact cleaner just in case(automotive connector safe), but still it will not work. Any ideas? Is there some sort of calibration I have to do?

Well, figures right after I ask, I manage to fix it, lol. I took the connector off again, and hosed it down with contact cleaner, put it back on, and now it works. Guess it was just a poor connection somewhere. Why it didn't work the first time is to remain a mystery I suppose. Gotta love living on the peninsula, where everything that isn't painted corrodes.