I got a 2006 mercury mountaineer with the 4.6l v8. It wont start and no combustion going on. I got multiple fuel codes. I will list codes below
1. P0193 - fuel rail pressure sensor high input
2. P0181 - fuel temperature sensor a# high input
3. P0183 - fuel temperature sensor a# high
4. P1000 - bs code i think. Nothing related ot my issue i think but not sure

So i got a nice bidrectional scanner. What pids do i need to look at. I am think it is either fuel pressure sensor, or fuel pump control module.

 

I suspect there is a poor ground that supplies the sensors involved.Your scanner may not work correctly if the ground for it is affected.
A good visual inspection of the ground connections starting at the battery negative terminal and all ground connections you can see especially battery to sheet metal and engine. If starting is no problem , then verify good grounds to the sensors.

If you want to use your scanner see what it says for actual fuel pressure and desired fuel pressure . They should be pretty close.
Key has to be on and engine running.