5.3 fuel pressure sensor issues

[not_panda]

Hi there, I'm having some issues with my truck. My engine light has been on for some time for a knock sensor. I had them both replaced, and the light came back on, this time for an o2 sensor. I cleared the codes, then it came back with just a bad fuel pressure sensor. So I Replaced it, and the light came back on, still saying the fuel pressure sensor. I Replaced it with another one, and the light is still saying it's a bad fuel pressure sensor. Any ideas on what could be causing this? Any help is very much appreciated.

 

[SLCHOE]

What is the code?

 

[not_panda]

I'm not sure of the actual code. My buddy who has the scanner just left for vacation so it's gonna be about 2 weeks before I can get my hands on the scanner. I'll be sure to post it as soon as I can.