6.7 P0191 code
Thread Starter
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Tuned
Joined: Jan 2017
Posts: 376
Likes: 3
6.7 P0191 code
Well I have a 2017 350 with 66k miles now, for the last few months I only drive it weekends and stay parked on week days.
On Friday night I remote started and when I jumped on the truck had the CEL light and reduce engine power message on screen
I have Banks Derringer installed so I check the codes, I have P0191 ''Fuel rail pressure sensor a circuit/rande performance''
I drove it and didn't notice any power reduced, so I cleared the code, drove yesterday no issues but at night got the code again, cleared and this morning again.
I Google it but not too much info on 6.7s . Dealer it's close and I have to make a 400miles trip today pulling q horse trailer and little uphill (grape vine CA). Anything that I be concerned? Should I wait till dealer check it?
TIA
On Friday night I remote started and when I jumped on the truck had the CEL light and reduce engine power message on screen
I have Banks Derringer installed so I check the codes, I have P0191 ''Fuel rail pressure sensor a circuit/rande performance''
I drove it and didn't notice any power reduced, so I cleared the code, drove yesterday no issues but at night got the code again, cleared and this morning again.
I Google it but not too much info on 6.7s . Dealer it's close and I have to make a 400miles trip today pulling q horse trailer and little uphill (grape vine CA). Anything that I be concerned? Should I wait till dealer check it?
TIA
Hotshot
Joined: Oct 2015
Posts: 19,676
Likes: 12,797
From: Wyoming
Have you tried running it without the Banks Derringer installed? I know the Derringer is supposed to have a failsafe feature, but verifying that the add-on isn't causing the problem is something I would do first.
Thread Starter
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Tuned
Joined: Jan 2017
Posts: 376
Likes: 3
I was at gas station when I wrote this thread, got home, turned truck off and had to run to store before disconnecting the banks and the CEL was gone, no codes, I'm in my 400 miles trip right now and hasn't come back again.
I don't know what's the deal, like I said, never noticed any engine power reduced
5th Wheeling
Joined: Feb 2012
Posts: 25
Likes: 1
Strange code
Sounds like you found your problem but just a heads up on codes. I was getting an intermittent p203c code then it got worse. I noticed the starter not turning over as quick as it should so I replaced both batteries. No more code. Some systems are very voltage sensitive. Apparently some checks are made during startup.
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Tuned
Joined: Jan 2017
Posts: 376
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Hotshot
Joined: Jul 2013
Posts: 14,211
Likes: 2,170
You won’t know if the problem is
an actual fuel rail pressure problem
or
an error with the pressure monitoring system
there have been cases where add on devices cuase false fuel rail pressure and when the suppliers of the add on devices are confronted...they admit it was a reported problem....but have no fix.
an actual fuel rail pressure problem
or
an error with the pressure monitoring system
there have been cases where add on devices cuase false fuel rail pressure and when the suppliers of the add on devices are confronted...they admit it was a reported problem....but have no fix.
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@1olddogtwo - Thanks for the reply. I am not jumping on the tuner as I have been very happy with it and trust Banks as a vendor. I am just trying to figure out my next course of action without throwing parts at it. I was going to start with the fuel pressure sensor and the fuel filters but wanted more info from Robeleo since he seems to have been in the same situation as I am currently in.
Thread Starter
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Tuned
Joined: Jan 2017
Posts: 376
Likes: 3
@1olddogtwo - Thanks for the reply. I am not jumping on the tuner as I have been very happy with it and trust Banks as a vendor. I am just trying to figure out my next course of action without throwing parts at it. I was going to start with the fuel pressure sensor and the fuel filters but wanted more info from Robeleo since he seems to have been in the same situation as I am currently in.
Last time I had the code I cleared and never hayan issues. The time the CEL was on and took it to the dealership I park, went inside, talked to the tech, go outside and light was off and never come back until last week.
Again after remote start, when inside and CEL on and same message "engine power reduced" cleared the code and hasn't come back yet.
Fuel filter were changed three weeks ago same with the full 100k miles service
Mountain Pass
Joined: Jul 2020
Posts: 122
Likes: 44
From: Weatherford
Well I have a 2017 350 with 66k miles now, for the last few months I only drive it weekends and stay parked on week days.
On Friday night I remote started and when I jumped on the truck had the CEL light and reduce engine power message on screen
I have Banks Derringer installed so I check the codes, I have P0191 ''Fuel rail pressure sensor a circuit/rande performance''
I drove it and didn't notice any power reduced, so I cleared the code, drove yesterday no issues but at night got the code again, cleared and this morning again.
I Google it but not too much info on 6.7s . Dealer it's close and I have to make a 400miles trip today pulling q horse trailer and little uphill (grape vine CA). Anything that I be concerned? Should I wait till dealer check it?
TIA
On Friday night I remote started and when I jumped on the truck had the CEL light and reduce engine power message on screen
I have Banks Derringer installed so I check the codes, I have P0191 ''Fuel rail pressure sensor a circuit/rande performance''
I drove it and didn't notice any power reduced, so I cleared the code, drove yesterday no issues but at night got the code again, cleared and this morning again.
I Google it but not too much info on 6.7s . Dealer it's close and I have to make a 400miles trip today pulling q horse trailer and little uphill (grape vine CA). Anything that I be concerned? Should I wait till dealer check it?
TIA
Mountain Pass
Joined: Jul 2020
Posts: 122
Likes: 44
From: Weatherford
For those that research this code; I had cleared the code before posting, twice, but it still came back. 4 days ago, I removed the Derringer connections before going the pressure switch route. I ran the truck hard from stops, moving, started restarted, everything I could do to make the check engine light come back on. It hasn’t. So either the Derringer connections were bad or the Derringer itself developed an issue after about 3 years of use. Using the iDash, before I removed the Derringer, the FRPs were jumpy and below what was commanded. (Checking numbers solely with iDash). After Derringer removal, FRPs were all steady and inline with what was being commanded.
Called Banks, explained the issue, they sending another Derringer. The rep was typing the whole time while we talked and never balked at what I was saying. Just got quiet for a few seconds while he read and said they will replace it. Wonder if they already knew. I will reinstall the Derringer as I like the performance improvements.
Update; I have driven on a trip for over 1000 miles and no issues. Towed 5k bumper pull TT through the hill country for about 100 miles and no issues with new Derringer.
Called Banks, explained the issue, they sending another Derringer. The rep was typing the whole time while we talked and never balked at what I was saying. Just got quiet for a few seconds while he read and said they will replace it. Wonder if they already knew. I will reinstall the Derringer as I like the performance improvements.
Update; I have driven on a trip for over 1000 miles and no issues. Towed 5k bumper pull TT through the hill country for about 100 miles and no issues with new Derringer.
