whats the code?

haven't gone to autozone yet, but I know its because i put this in. Last month i had a PO456 CEL due to my feul cap....then I bought a new one and the CEL shut off in 3 days.

Ok so i stoppd by autozone yesterday and used their scanner....the code that poped up was P0704. I think it said "clutch switch circuit malfunction". Now im thinking it was my dealer that f'd up last wednesday when installing a new clutch pedal assembly -_-. Any of you guys ever have this problem ?