Pooo5 Code Fuel Shut Value A Chk Open

[bmiller]

Guys can anyone tell me where to start to fix this code? It an 05 6.0 stk and has been running fine today go to start it up and it is running on a few cylinders and I got this code. Was planning on leaving town after work and need this truck but no power runs but just bearly. It has been warmer here and noww turnd back cold could it be h2o in something and just need to warm the truck up??? Thanks for reading and any help