Archived P0192 code issues! Truck barely idleing...

[Paladin1911]

Ok- Need some help here. The other day my fuel pressure reading on my Commander started fluctuating between 0 and 10 psi. Completely random, for a while it would stay at 9 psi, and then drop to 0 psi.



I recently put on the 40 psi sender that Quad sent me (the old green one wasn't very accurate, and Quadzilla's customer service is superb, by the way!), and all was great. Then, the problem I mentioned above.



This morning I started the truck and it ran fine. Then, this afternoon, I started the truck and it will barely idle, and it's giving me one code: P0192 (low rail pressure).



This truck hasn't ever had a box on it, the only mods it has are in my sig. What do ya'll think!?



PS- Jeremy at Quad is working on this for me, but he won't be able to get back to me until tomorrow. I'd like to fix this pretty quick-like.



Thanks!!!

 

[Paladin1911]

Update- I drove the truck a couple of miles to see if it would clear up, and the truck rattles and runs rough at idle, but with some throttle it quiets down and almost runs normal? It's definately in limp mode tho, cause there isn't much power?

 

[BradyWilliams]

You could have a bad Bypass Valve in the Common Rail. You could also have a bad Injector or a bad CP3 pump. Thanks, Brady

 

[Paladin1911]

Thanks for your help Brett- I'm calling the dealer this morning to get the truck in.