Well, I would probably eliminate the O2 sensor for the time being, simply because of the time frame.  What valve are we talking about?  what code was it?  I can't think of any codes that say you have a bad valve.   You may have a short, or you may have multiple problems.  Are you sure you're reading the flashes right?

yeah it flashed 7 times then one time, then the longer pause and did the same code, and i looked the codes up online, not sure it was a reliable source, but i dont know where to get the correct info, maby i can check my chiltons manual but i dont remember seeing it in there, and a short is definately a possibility ive been so busy with work and school i havent really got to tear into it