Tsut09

Hey everyone, I just changed my power steering belt and now my 08 SEL 3.5 won't dive. It'll barely start. I got it started long enough to get codes and it's saying bank 1&2 cam sensor circuits. It's not the cam or crank sensors. I cant find anything wrong withe the wiron etc. I'm curious though I turned the crank backwards to stretchave the belt on. Could that possibly mess with the timing?