Go Back   Ford F150 Forum - Community of Ford Truck Fans > Late Model F150s > 2004 - 2008 Ford F150
Sign in using an external account
Register Forgot Password?


Reply
 
 
 
 
Thread Tools Search this Thread Display Modes
Old 03-02-2011, 11:28 AM   #1
Jackman46
 
Join Date: Mar 2011
Location: Indiana
Posts: 2
Mentioned: 0 Post(s)
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
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
 
picaflor's Avatar
 
Join Date: Sep 2010
Location: South Florida and NYC part time
Posts: 1,335
Mentioned: 0 Post(s)
Thanked 9 Times in 6 Posts
Feedback Score: 0 reviews
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."
__________________
2005 F150 SuperCrew Lariat 5.4L V8 Triton 4x2
I survived the change of broken spark plugs in the F150....
But my transmission didn't make it to 75000 miles....
picaflor is offline   Reply With Quote
Old 03-02-2011, 11:39 AM   #3
Jackman46
 
Join Date: Mar 2011
Location: Indiana
Posts: 2
Mentioned: 0 Post(s)
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
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
Mentioned: 0 Post(s)
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
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
Old 03-02-2011, 12:29 PM
 
 
 
Reply

Similar Threads
Thread Thread Starter Forum Replies Last Post
Truck Stalls-code p0191--fuel rail pressure sensor! ANSWER jls6681 2004 - 2008 Ford F150 2 06-21-2011 02:27 AM
Code P0191--my truck won't start. jls6681 2004 - 2008 Ford F150 2 02-15-2011 01:30 PM
P0191 dtc RedFX4 2004 - 2008 Ford F150 6 01-20-2011 10:34 PM
2004 F150 with codes: P0171, P0174, P0191, P0301 SoldierKhakiman 2004 - 2008 Ford F150 3 03-07-2009 11:31 PM
2004 F150 with codes: P0171, P0174, P0191, P0301 SoldierKhakiman Maintenance Shop 0 03-06-2009 06:17 PM


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

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


Join F150 Forum

 

The Mustang Source
All times are GMT -4. The time now is 02:30 AM.


Copyright 2006 - 20011 F150forum.com
This site is in no way affiliated with the Ford Motor Company.