P0191 Code - Ford F150 Forum - Community of Ford Truck Fans



P0191 Code

Reply
 
 
 
Thread Tools Search this Thread
Old 03-02-2011, 11:28 AM   #1
Jackman46
Thread Starter
 
Join Date: Mar 2011
Location: Indiana
Posts: 2
Thanks: 0
Thanked 0 Times in 0 Posts
Default P0191 Code

All,
I'm new to this site and I'm looking for a little advise. I recently got a check engine light and had the diagnostics run on my truck (2004 F150 Lariat, 5.4). The diagnostics came back as Error code P0191. The truck still runs as if nothings wrong. I've seen other posts about their trucks being dead in the water and the resolutions to their problem. Do any of you know what could be the issue with my truck....I'm assuming the fuel pump is okay since the truck runs fine? Any suggestions would be greatly appreciated.

Jeffrey
Jackman46 is offline   Reply With Quote
Old 03-02-2011, 11:32 AM   #2
DIY
5 Year Member
 
picaflor's Avatar
 
Join Date: Sep 2010
Location: South Florida and NYC part time
Posts: 1,331
Thanked 9 Times in 6 Posts
Default

p0191 is a fuel rail pressure sensor code, check this thread:

http://www.f150forum.com/f4/think-it...-module-83145/

and from others thread:

"You may want to check out the Fuel Pump Driver Module (FPDM) itself, they're notorious for going bad. Our trucks don't have a return in our fuel system, so that module is responsible for adjusting the fuel pump to maintain the pressure. Easy access, just lower the spare tire, two bolts and you're done. "

" So, my 2004 F150 kept stalling on me and i couldnt figure out whatr was wrong with it so i started with the following..after replacing my fuel filter, then my fuel pump...estimated costed of a little over $550, i finally took it to a mechanic and the problem was the fuel pump module. so if ever you run into this problem check this first, its located above the spare tire and its a black box with an aluminum plate on the bottom that is bolted onto the steel frame, and since im up north salt and what not works its way in between these to metal and it corroides the aluminum plate and reveals the electronice circuit board which communicates with the fuel pump, onces this gets wet it shorts out and makes your truck stall. so if anyone runs into this problem, check out your fuel pump module. Hopes this saves some of you some money, unlike myself."
picaflor is offline   Reply With Quote
Old 03-02-2011, 11:39 AM   #3
Jackman46
Thread Starter
 
Join Date: Mar 2011
Location: Indiana
Posts: 2
Thanks: 0
Thanked 0 Times in 0 Posts
Default

Picaflor,
I'll check that out....thanks for the quick reply.

Jeffrey
Jackman46 is offline   Reply With Quote
Old 03-02-2011, 12:29 PM   #4
Senior Member
 
First-On-Race-Day's Avatar
 
Join Date: Mar 2011
Posts: 102
Thanks: 0
Thanked 0 Times in 0 Posts
Default

I just changed the FPDM on my truck it's on the frame above the spare tire. You can only get it at ford it's around 150 dollars and takes about 15 minutes to change. Be sure to under coat the frame where it mounts so the FPDM doesn't corrode again. My truck was saying the same code and that fixed it.
First-On-Race-Day is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Just another dead on the road 2013 EcoBoost that Ford Won't Fix XDotNet General F150 Discussion 214 02-26-2016 02:30 PM
Transmission Troubles jprevat 1997 - 2003 Ford F150 32 10-06-2015 05:48 PM
2008 5.4 has no power batts86 2004 - 2008 Ford F150 12 10-05-2015 10:37 AM
PLEASE HELP! Any ideas greatly appreciated!!! 98BlackLariat Maintenance Shop 3 10-01-2015 10:25 AM
f150 rough drive and can't find the problem!! theftedlincoln General F150 Discussion 1 09-27-2015 09:05 PM


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -4. The time now is 07:51 PM.


Copyright 2006 - 2016 F150Forum.com