Josh Posted June 4, 2013 Share Posted June 4, 2013 got another 2011 6.7 65,000 miles with a p228f fuel pressure regulator 99 exceeded learing limits too high. Truck idles like it got a big cam. rel comp ok, power balance ok. went through pinpoint tests M11: frp pressure and voltage within spec. KOEO Actual : FRP a 339 psi FRP v 0.33v spec is 730 kp which equals 105 psi? right? .30v replace frp sensor. going to replace it and see what it does. Anyone had this concern yet? Quote Link to comment Share on other sites More sharing options...
Josh Posted June 4, 2013 Author Share Posted June 4, 2013 installed new frp. koeo pass, koer fuel system abort failure. it runs greati but lopes like 3 times on startup only? Quote Link to comment Share on other sites More sharing options...
Josh Posted June 10, 2013 Author Share Posted June 10, 2013 anyone? Quote Link to comment Share on other sites More sharing options...
Brad Clayton Posted June 10, 2013 Share Posted June 10, 2013 I got nothin' Quote Link to comment Share on other sites More sharing options...
Keith Browning Posted June 10, 2013 Share Posted June 10, 2013 Yeah, me neither. Don't see much drivabilty issues with these as of now. For me they either run or they don't. Usually when they don't they need an engine. Quote Link to comment Share on other sites More sharing options...
Alex Bruene Posted June 10, 2013 Share Posted June 10, 2013 Nada. Quote Link to comment Share on other sites More sharing options...
Josh Posted June 10, 2013 Author Share Posted June 10, 2013 ended up being the fuel pressure control valve.. Quote Link to comment Share on other sites More sharing options...
Keith Browning Posted June 10, 2013 Share Posted June 10, 2013 Thanx for the update! Quote Link to comment Share on other sites More sharing options...
Josh Posted June 10, 2013 Author Share Posted June 10, 2013 No prob. FRP was biased. #7 injector had 15 drop. manual compression was good. Replaced frp, injector. Still have lope idle. Tried a test Fuel pcv. all good now. Quote Link to comment Share on other sites More sharing options...
mchan68 Posted June 11, 2013 Share Posted June 11, 2013 Yeah, me neither. Don't see much drivabilty issues with these as of now. For me they either run or they don't. Usually when they don't they need an engine.I should be so lucky. The few I've had coming in that don't run have all been no-crank/no-starts that have ended up being a open CAN + or CAN - circuit to either the PCM or BCM. Quote Link to comment Share on other sites More sharing options...
Keith Browning Posted February 25, 2015 Share Posted February 25, 2015 Diagnosing this code now. Followed the Pinpoint tests M and ME and came to no resolution. PCED says replace PCM. If I run a self test the truck passes. Clear the code the light goes off, released the truck and it came back on a few days later. The only thing I saw on this was the Pressure regulator did not respond in PPT M14. Quote Link to comment Share on other sites More sharing options...
Matt Saunoras Posted February 26, 2015 Share Posted February 26, 2015 I saw that code once. Removed the PCV and it had rust on it. Tried to sell a fuel system, truck left with a new PCV and hasn't been back for a damn thing. Quote Link to comment Share on other sites More sharing options...
Keith Browning Posted February 27, 2015 Share Posted February 27, 2015 The truck I am working on here - the regulator did not fix this issue. As per the Hot Line I replaced the entire fuel rail on the left side so I cant be positive what corrected the condition. THis truck would not pass the High Pressure Fuel System test until I replaced the rail. Thank you for the detailed information and diagnosis that has been performed. As you are suspecting and likely supported by the past reports that you have already reviewed, the concern is related to a concern with PCM not being able to control the fuel pressure in the high pressure fuel system with the Pressure Control Valve (PCV) and the Volume Control Valve (VCV). This would mean that one of the valves is sticking intermittently or there is an issue with an intermittently biased Fuel Rail Pressure (FRP) sensor.The replacement of the PCV is likely the correct step to repair the vehicle, however since 3 of the 4 control components for the high pressure fuel system are located in the left hand fuel rail, this may be a more complete repair for the vehicle. The left hand fuel rail comes with the FRP sensor and PCV already torqued in the rail. The left hand fuel rail also includes an orifice that could be come dislodged and cause pressure concerns in the high pressure fuel system. Because of this, it would be recommended to replace the left hand fuel rail and retest for the proper operation. Quote Link to comment Share on other sites More sharing options...
amailloux Posted February 27, 2015 Share Posted February 27, 2015 I have been advised by gm to replace the rail when the pcv has failed. The pcv is extremely torque sensitive and they don't believe we can torque them reliably in the field. I have a thin crowsfoot for this. They pay for a rail no questions asked if the pcv needs replaced now. FWIW GM covers the pcv under emissions which is usually 50K depending on gvwr, and the rail is covered by the diesel warranty for 100K or 5 years. And the rail pays 11.2 under warranty so I don't mind at all. Quote Link to comment Share on other sites More sharing options...
8WA Sman Posted February 28, 2015 Share Posted February 28, 2015 The 450 I had about a year ago got a DFCM for this code no problem since. I am starting to doubt my diagnoses now, mine had no drivability problems. Quote Link to comment Share on other sites More sharing options...
Keith Browning Posted February 28, 2015 Share Posted February 28, 2015 The 450 I had about a year ago got a DFCM for this code no problem since. I am starting to doubt my diagnoses now, mine had no drivability problems.I would not be too concerned with your diagnosis. Low fuel supply pressure/volume is one possible cause for this code as are a bunch of other seemingly non issues. Injection problems, BASE ENGINE faults for example. Quote Link to comment Share on other sites More sharing options...
cbriggs Posted March 1, 2015 Share Posted March 1, 2015 Also worth note, when that code is present the dpf will not regen. When I saw that code the truck was towed in for a no start as the dpf was plugged completely. I tried a PCV to no avail, but a LH rail fixed it. Quote Link to comment Share on other sites More sharing options...
Brad Clayton Posted March 1, 2015 Share Posted March 1, 2015 Got one in my bay now with this code. It passed all test with flying colors, however a KOER test flagged P0088 in addition. Looked at freeze frame data and requested pressure was just under 4000 psi and actual was 8000 psi. Gonna pull the PCV and have a look see in the rail. Looks like a rail is the consistent fix on these, no? Quote Link to comment Share on other sites More sharing options...
Keith Browning Posted March 1, 2015 Share Posted March 1, 2015 Start an hotline report and look through the other completed sessions. If you don't find evidence of contamination or metal flakes I might agree that the rail is the wag to go. I would open a Report any way. Quote Link to comment Share on other sites More sharing options...
cbriggs Posted March 3, 2015 Share Posted March 3, 2015 When I dealt with mine hotline was extremely adamant about the torque spec and procedure of the PCV. As Alan said above, it is likely that we aren't able to accuratly torque these in the field.(Especially on the 6.7, its in a tough spot) I also got the story about something dislodging in the rail, so I would say a rail is the way to go. It would be a quick repair if not for replacing the entire fuel line set. Quote Link to comment Share on other sites More sharing options...
8WA Sman Posted March 5, 2015 Share Posted March 5, 2015 I don't know if this is actually the correct way to diagnose this code but what I did was overlay the FRP slope before and after to determine if I fixed the truck. Notice after I put the DFCM in my FRP slope angle is steeper. I used the code setting criteria from the Ford OBD-II manual on the code P228F which states : P228E, P228F: If the adaptation factor exceeds positive or negative thresholds which correspond to approximately a 20% deviation in the Rail Pressure Sensor slope, a DTC is set. After DFCM Please feel free to correct or comment on my diagnostic aproach Quote Link to comment Share on other sites More sharing options...
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