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Did you figure it out?I have same issueMy 2016 has low pressure on low sideI replaced everything pcm BCM pressure sensors hpfp tank with pump and sender and canister valve and purge valve

Pressure regulator on fuel line

Where is that one located. I thought there was only one by the high pressure fuel pump or are you talking about the fuel pressure sensor on the line by the firewall?

Ok thanks. That is the pressure sensor. Replaced that already. My problem is that the fuel does not reach the engine. I hear the pump running but it does not build pressure. It goes up to 30psi at most then drops almost instantly when not cranking anymore

Ice changed the fuel pump in these, idk if you have? You either have to jack it up high enough to be able to drop the tank, (i built wheel cribs out of 2x4s) or i seem a video of someone cut underneath the back seat with an angle grinder you have to be extremely careful if you go that route cause the fuel pump is very close when you cut through. I did the fuel pump like a year ago it was randomly shutting off whole driving. Now dealing with radiator fan issues. Gotta check relays already changed the grille actuator and a bunch of other shit but its got almost 130k on it now had it almost 10 years. It's my 2nd vehicle my wife has two, and we got our teens one so i barely use it. I work on the daily drivers more. My family seems to think you can just get in and drive and change oil if the light comes on, I'm like no. You have to maintain them or your going to be throwing money to a dealership constantly, when I have to do something some what routine depending on who's vehicle it is i make them come out and turn some wrenches so they understand what it is were doing and it's a piece of machinery that has like a million moving parts plus there's 4 controlled explosions going off every sec. Car companies are making it harder to diy but there's plenty of forums if you want to you can fix anything on them.

Have you checked if your norsils is locked

I had checked everything until I decided to drop the tank and check the pump. It turned out the dealer did not replace my pump when replacing the tank and charcoal canister and others. They did say they replaced it but it was a cheap brand in there from O'Reilly's I think. The previous owner put that in and it did cause the issues. Replaced it with OEM and no more problems next thing is to file a complaint on that dealer in Pembroke pines fl