P1211... ICP code
Thread Starter
|
More Turbo
Joined: May 2008
Posts: 548
Likes: 3
From: Beaufort, SC
P1211... ICP code
I've been having problems with my truck and have a question. My earlier thread about fuel pressure is HERE When I went for a test drive after installing a FP gauge, I kept getting P1211 codes. Every time I ran it hard, it would throw a code. I had the MT2500 hooked up and had my GF watch the data stream.. Specifically ICP and IPR %. I was able to get the ICP up to 3,300PSI and the IPR percentage was up to 63. At idle, ICP is at 480 and IPR at 9%
The P1211 code only says above/below desired. WHat are the upper and lower limits?
The P1211 code only says above/below desired. WHat are the upper and lower limits?
Cargo Master
Joined: Jun 2003
Posts: 3,292
Likes: 6
From: Ardenvoir, Washington
P1211 is a normal code you get if you have your engine chipped or have a programmer or tuner.. Disconnect the tuner, clear the code and run it hard again.. you probably won't get the code.. (i think the stock HPOP can't keep up with the demand when you drive it hard and you get the code..)
Thread Starter
|
More Turbo
Joined: May 2008
Posts: 548
Likes: 3
From: Beaufort, SC
P1211 is a normal code you get if you have your engine chipped or have a programmer or tuner.. Disconnect the tuner, clear the code and run it hard again.. you probably won't get the code.. (i think the stock HPOP can't keep up with the demand when you drive it hard and you get the code..)
Thanks!
That's probably what's happening.. I have an EVO tuner on it..
Senior User
Joined: Aug 2012
Posts: 104
Likes: 0
P1211 is a normal code you get if you have your engine chipped or have a programmer or tuner.. Disconnect the tuner, clear the code and run it hard again.. you probably won't get the code.. (i think the stock HPOP can't keep up with the demand when you drive it hard and you get the code..)
Hotshot
Joined: Jan 2011
Posts: 18,849
Likes: 179
From: Puget Sound
Many things can cause the P1211, it's a case-by-case thing. A hot tune is a very common cause, though.
Trending Topics
Lead Driver
Joined: Jun 2004
Posts: 6,340
Likes: 588
From: Amarillo, TEXAS!
Low fuel pressure is one of the most common causes of the P1211 popping up. It can also be caused by HPO leaks, failing IPR, failing HPOP. It isn't often the pump itself, but it does happen from time to time.
The code is triggered when the PCM is unable to control ICP by commanding the IPR duty cycle higher or lower, such as what happens when there's a large leak. The ICP keeps dropping, so the PCM commands the IPR duty cycle higher and higher to its maximum. If the ICP is still lower than desired it is considered by the PCM to be uncontrollable, and the code is set.
The code is triggered when the PCM is unable to control ICP by commanding the IPR duty cycle higher or lower, such as what happens when there's a large leak. The ICP keeps dropping, so the PCM commands the IPR duty cycle higher and higher to its maximum. If the ICP is still lower than desired it is considered by the PCM to be uncontrollable, and the code is set.
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
Rezvani's Latest Post-Apocalytic Monster Is a Ford F-150 Raptor Underneath
Verdad Gallardo
Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer
Joe Kucinski
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)
Brett Foote
Top 10 Ford Truck Tragedies
Joe Kucinski
AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make
Brett Foote
Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!
Michael S. Palmer
Ford's 2001 Explorer Sportsman Concept Looks For a New Home
Verdad Gallardo
10 Best Ford Truck Engines We Miss the Most!
Joe Kucinski
2026 Shelby F-150 Off-Road: Better Than a Raptor R?
Brett Foote
Fleet Mechanic
Joined: Mar 2009
Posts: 1,856
Likes: 52
From: Sacramento Delta, CA
Pikachu: My personal experience with low fuel pressure causing a 1211 Code. When inside delamination of my van's steel fuel tank clogged my fuel filter causing fuel starvation, the code I got was 1211.
Thread
Thread Starter
Forum
Replies
Last Post
sleek122
1999 - 2003 7.3L Power Stroke Diesel
23
Nov 29, 2023 07:51 PM
sudsmcduff
1999 - 2003 7.3L Power Stroke Diesel
3
Nov 14, 2015 06:10 PM
wackercattle
1994.5 - 1997 7.3L Power Stroke Diesel
4
Nov 9, 2015 09:07 PM
