P0191 fuel rail - OBD Fusion

Pfmilligan

New member
2014
V6

I’ve had my sprinter for about 4 months...$3000 into the DEF system and now I’m getting a whole new set of problems. I don’t even know where to begin to find the fuel rail pressure sensor.
Obviously I should have already gotten the workshop manual but here I am, almost broke with not enough sprinter knowledge to figure it out. Anyone with pictures or diagrams of under the hood? PLEASE!! In Taos, NM with little trust for local mechanics...
 

Pfmilligan

New member
You are a saint and a scholar! Thank you so much! I’ve been looking for that link all over the place. I’m sure it was right under my nose but… The credit goes to you!
 

manwithgun

Active member
Thanks should go to “showkey” who shared the link in another post. And an honorable mention to autostaretx and sikwan for helping integrate the Apple image format. I’m just grateful to have this forum and a community that shares information.
 

showkey

Well-known member
Last edited:

JV33

New member
So I’m curious, did you remove the passenger side sensor on the rear of the fuel rail? And did that at the end of the day fix the issue? And can you remove the sensor while the fuel rail is on or do you need to remove the rail and re move the sensor while it’s off the van? If anyone can help on the second part. Please and thank you ����. Also installment is tighten to 60nm, back it off 90 degrees, then tighten again to 80 Nm??? Is this what everyone has?
 
Last edited:
I recently diagnosed one with the same code. It was showing 1000 psi fuel pressure with engine off (should be 100 psi). Symptoms were long crank time and stalling. During inspection with the key still on I wiggled the connector at the fuel pressure sensor and I could hear the turbo actuator move around. Cleaned and tightened the contacts and the fuel pressure sensor started reading correctly. So rule out the connector before replacing any parts! I will be getting a new connector and will post the part numbers once the parts department finds it for me- unless someone else already has it...???
 
Sorry to dig up an old thread... but my check engine light came on today with the same P0191 code. Wondering... What are the chances it could it be as simple as a clogged filter.
 
Last edited:

Top Bottom