Land Rover High Fuel Pressure

Glenn Diagnostician Australia Posted   Latest  
Discussion
Electrical
P0088 — Fuel Rail/System Pressure - Too High Bank 1

Hello group I have a 2009 range rover vogue 3.6 v8 diesel with fault code p0088 [rail pressure to high] checked fuel pressure and flow [low side all ok] car goes in to limp mode after 5 seconds of start up with p0088 the only fault code showing. Sometimes if I hold the rpms up on start up it wont log the fault code till I let it come back to idle. I have disconnected the returned line in case there was a blockage still the same.

thanks for reading

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Milos Technician
Ontario
Milos
   

I don't know this engine or how its HPFP is setup, but I know on VW the HPFP is run off the cam and this is a common problem on the 2.0t when the timing chain stretches and It does not throw a code for cam/crank correlation. That's if this turns out to not be a high pressure sensor or something easier. Also how does it run? Misfire or anything?

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Glenn Diagnostician
Australia
Glenn
 

Thank milos I have herd of the cam issue with vws ..no miss fire. No cam or crank correlation codes. Runs ok just in limp mode.

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Kyle Mechanic
Illinois
Kyle
   

Hi Glenn, What is your desired vs. actual rail pressure? What does snapshot data indicate is happening. I'm not familiar with this engine, not sure we have them here in the states but typically speaking a p0088 on a diesel is a problem with the pressure control valve/fuel control actuator (everyone calls it something different) on the pump. Sometimes they are not serviceable and require…

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Agree
Glenn Diagnostician
Australia
Glenn
 

Thanks kyle doesnt show desired pressure just actual. Might be suction control valve.

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Luke Mobile Technician
United Kingdom
Luke
   

What pressure are you getting through the bleed valve from the LP@ the tank? Both ignition only, then cranking? Apologies I have just seen you stated LP side all ok. Still curious mind. The HPFP PCV's aren't generally set-up as replaceable and most change as a complete unit, but I have heard if you strip it down, you can change them.

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Sherman Owner
Texas
Sherman
 

Buy a 1968 VW Beetle and avoid all these high tech headaches!!!

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Unprofessional