Hello I have a 2006 F350 5.4L Today I unplugged some of the wiring harness under the fuse panel under the hood to test the wire for the vent solenoid. My truck is throwing code PO446. I plugged everything back in and now my truck will not start. I have no idea where to go from here please help

 

Welcome to the site I hope we can help..

Pull the plugs off again and look for a pin the pushed in etc bent...
Do you hear the fuel pump for 3 secs with key on..?

 

might also try to unhook the battery and see if that does something.