06 LLY Limp Mode / Fuel Pressue
 

Good morning all, new member from Austin. I originally joined the forum after buying this truck for the classifieds and the DIY threads, but I've had some issues over the weekend and I'm looking for further insight.

Threw the P0191 code for fuel rail pressure sensor and went into limp mode, cleared the code and then had a P0405 which came up for EGR. I had my old tuner for my gassers disable the EGR system in the truck but this code still seems to be coming up. I've already ordered a Bosch LBZ fuel pressure regulator and I wanted to know if that will clear up whatever is causing the P0191 code intermittently or if it is the sensor itself.