p 1211 code - Ford Powerstroke Diesel Forum
 
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post #1 of 6 Old 08-11-2012, 08:07 PM Thread Starter
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p 1211 code

i've been getting a random p1211 code in my truck for the past two months. i've been monitoring icp pressure and duty cycle and i havent noticed anything that would cause the code to come up, so i dont think its my hpop. the truck has been set up like my signature says for two years. never had a problem before. any input is appreciated, thanks.


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1996 F250 SC/LB, 4x4 PSD, ATS stage 1 trans 5 star tcc, AC codes,TW tunes, magnaflow 4" exhaust, 6637 , FS 2500 bypass oil filter,pure power reusable oil filter, isspro gauges, dieselsite cpr fuel pump system, adrenaline hpop, pml rear diff cover ,ebpv delete,non epbv pedestal, king pin dana 60, swamps idm, tru cool 4739
USMC 1993-1998
Plumbers & Pipefitters L.U.447
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post #2 of 6 Old 08-13-2012, 09:55 PM
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Oil clean and full? How does the truck idle/run? When was the last fuel filter swap? How does the IPR look? Clean with the brass "nut" on the back tight? No leaks in the motor valley? If it is running a little rough does it run better if you disconnect the [EDIT]ICP? What is fuel pressure at idle/cruising/WOT?

Matt
'97
-Bean's: 160/100 (FF Injectors), 2/ 6-POS chips (TW & Beans tunes), Overboost controller, E-Fuel
-BANKs: downpipe, full exhaust, gauges, intercooler
-Irate: T-4 kit, IC pipes, 3" Irate Plenums, BASB Turbo
-Stage II trans.
-Mag-Hytec trans. and pumpkin covers
-6637, CCV, IDM, 6.0 Fan, 49-Federal PCM swap, MAP line Mod
-370 Amp alt., 40k trans cooler, ADRENALINE PUMP
-twin on-board air w/ 10 gal. tank

-Oh, and a 2015 F350 6.7L DRW 4x4


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Last edited by BigFuel; 08-14-2012 at 02:22 PM.
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post #3 of 6 Old 08-14-2012, 01:08 PM
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Quote:
Originally Posted by BigFuel View Post
If it is running a little rough does it run better if you disconnect the IPR?
Did you mean ICP vice IPR? Normally the engine will die if the IPR is disconnected (if ICP is disconnected, it should run off default table values and set a code, but still run). Cheers!

1997 F250 SC 4x4, E4OD, 4.10 LS, Basically Stock, Relocated Block Heater Plug, External Trans Filter, Tru-Cool Max, I/C Mounted but not Plumbed

SOLD - 1994 F350 CC DRW 2WD PSD, 5 Speed, 4.10 LS, SBC Con-O, Baldwin Filter, Tymar HPX Hose, DPPI DP, Bilsteins, $12 AIC, Coolant Filter, Explorer Overhead Console, A-Pillar w/ISSPRO Black Ice, EV Boost, and EV Pyro, Modified Pedestal, Gutted EBPV.
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post #4 of 6 Old 08-14-2012, 02:22 PM
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^Yes I get them backward sometimes. Sorry.

Matt
'97
-Bean's: 160/100 (FF Injectors), 2/ 6-POS chips (TW & Beans tunes), Overboost controller, E-Fuel
-BANKs: downpipe, full exhaust, gauges, intercooler
-Irate: T-4 kit, IC pipes, 3" Irate Plenums, BASB Turbo
-Stage II trans.
-Mag-Hytec trans. and pumpkin covers
-6637, CCV, IDM, 6.0 Fan, 49-Federal PCM swap, MAP line Mod
-370 Amp alt., 40k trans cooler, ADRENALINE PUMP
-twin on-board air w/ 10 gal. tank

-Oh, and a 2015 F350 6.7L DRW 4x4


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post #5 of 6 Old 08-15-2012, 12:29 PM
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From the HPOP guide:

P1211 sets if ICP is 410 psi above or 280 psi below the desired pressure for 7.5 seconds.

ICP more than 410 psi above command for at least 7.5 seconds can set a P1211 code. IPR with low duty cycle (less than 8% @ idle) and engine running, indicates a restriction in the drain circuit. This restriction is taking the place of the IPR valve, driving the IPR duty cycle lower, with higher than expected ICP. The excess restriction will be in the reservoir, front cover, stuck IPR valve, or debris above the edge filter. The drain path through the reservoir and front cover can be visually verified. Typically the pump or IPR
must be replaced to repair this concern. Do not replace both components at the same time.

This often occurs after the oil pan is resealed where excess sealant is forced through the lube system (short circuit check valve) and trapped at the edge filter of the high pressure pump.

Cheers!

1997 F250 SC 4x4, E4OD, 4.10 LS, Basically Stock, Relocated Block Heater Plug, External Trans Filter, Tru-Cool Max, I/C Mounted but not Plumbed

SOLD - 1994 F350 CC DRW 2WD PSD, 5 Speed, 4.10 LS, SBC Con-O, Baldwin Filter, Tymar HPX Hose, DPPI DP, Bilsteins, $12 AIC, Coolant Filter, Explorer Overhead Console, A-Pillar w/ISSPRO Black Ice, EV Boost, and EV Pyro, Modified Pedestal, Gutted EBPV.
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post #6 of 6 Old 08-20-2012, 08:33 PM Thread Starter
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figured out the problem. my pump blew up last week, so its on its way back to bob riley for a rebuild.


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1996 F250 SC/LB, 4x4 PSD, ATS stage 1 trans 5 star tcc, AC codes,TW tunes, magnaflow 4" exhaust, 6637 , FS 2500 bypass oil filter,pure power reusable oil filter, isspro gauges, dieselsite cpr fuel pump system, adrenaline hpop, pml rear diff cover ,ebpv delete,non epbv pedestal, king pin dana 60, swamps idm, tru cool 4739
USMC 1993-1998
Plumbers & Pipefitters L.U.447
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