[LowercaseD]

I can’t find anywhere in the real oem diagrams a fuel feed pressure sensor or a low pressure fuel sensor. I can see the values in pro tools but nothing in any diagram. I think I might have a failing low pressure fuel pump or sending unit but I’m not totally sure where to check.
Thanks

[lnxguy]

https://www.realoem.com/bmw/enUS/sho...diagId=13_1150

[LowercaseD]

I thought that was the high pressure sensor? #3?

[MidWillamette335d]

So in ProTool you're seeing an actual value that's dynamic, or is it just an available field with nothing happening? Some fields are generic or for other platforms so it won't register if it's not available. In regards to the low pressure, that would more than likely be between the HPFP and LPFP, but not sure we have them per these diagrams (M57)...

https://www.realoem.com/bmw/enUS/par...BMW-335d&mg=16
https://www.realoem.com/bmw/enUS/sho...diagId=13_1149

Looks like filter/LPFP/sending unit to lines, to fuel filter, to more lines, to temp sensor, to HPFP...which led me to my first question (maybe it's in a diagram somewhere between the first and last links?). The gassers tho, do have a LPS right before the HPFP. Good luck getting it sorted, let us know what you find....