Go Back   Ford Truck Enthusiasts Forums > Diesel > 1999 - 2003 7.3L Power Stroke Diesel
Sign in using an external account
Register Forgot Password?


1999 - 2003 7.3L Power Stroke Diesel SPONSORED BY:

Reply
 
 
 
 
LinkBack Thread Tools Search this Thread
  #1  
Old 03-03-2011, 10:17 PM
countrycar's Avatar
countrycar countrycar is offline
Elder User
 
Join Date: Mar 2007
Location: Simi-Valley CA
Posts: 942
countrycar has a good reputation on FTE.countrycar has a good reputation on FTE.
1211 and 1212 codes

I'm dealing with a friends truck rightnow that has these codes 1211 and 1212 and it's been frustrating trying to diagnose this issue because of the lack of good info. These codes can be thrown by a bad Lpop, Hpop, Injector, Fuel pump, fuel filter, Clogged fuel pick up, gas in fuel, etc. I found this info and decided to post it up, becuase it's full of great information and diagnoses as well should any of you have these symptoms and or codes.

P1211, P1212 Ford Powerstroke Diesel0
Ford Diesels use oil pressure to drive the high pressure fuel injection system. The engine oil pump not only pumps oil to lubricate engine components, but also pumps oil into a reservoir to be used by the high pressure oil pump.

The high pressure oil pump pulls oil from the reservoir and raises the pressure to the point where it can pop open the injectors. The high pressure pump also increases the pressure of the diesel fuel so it can inject into the cylinders and vaporize quickly.

The oil pressure generated by the high pressure oil pump is regulated by an electric solenoid that is pulsed by the PCM. As this Injection Pressure Regulator (IPR) solenoid is powered and de-powered, a small shaft moves back and forth, allowing spurts of oil to flow into the high pressure oil lines The IPR can regulate pressures in excess of 3,000psi. The high pressure oil moves from the pump to the cylinder head through braided steel lines.

The PCM fires the diesel fuel injectors by energizing a solenoid coil in the injector. Unlike gas fuel injectors where the solenoid lifts a pintle off a seat to allow pressurized fuel to flow into the cylinder, the solenoid in Ford diesel fuel injectors allows high pressure oil to flow. Think of this like a doctor’s syringe. The pressurized oil pushes on the plunger of the syringe to “inject” the fuel through the injector and into the cylinder. Since the minimum psi required to open the injectors is 400psi, the PCM monitors the actual pressure of the oil going to the injector with an Injection Control Pressure (ICP) sensor. Using data from the ICP sensor, the PCM can adjust the pulse rate to the IPR.

Since the IPR operates off of a pulsed voltage, the amount of ON time versus OFF time is referred to as “duty cycle.” The high pressure pump can easily achieve pressures in excess of 3,000psi. But it’s up to the IPR to regulate the amount of pressure going to the injectors. The IPR can regulate a 3,000 psi reading with no more than a 12% duty cycle. Yet, the PCM is capable of providing up to a 60% duty cycle to the IPR. However, once it reaches 50%, the PCM sets a trouble code P1211 or P1212 for “ICP above/below normal.

If you receive this code, your first step is to check the oil level in the crankcase. Since the entire high pressure system depends on having enough oil in the reservoir, a drop in oil level of 3 or more quarts can bring the system to a quick stop. Unlike a gasoline engine where the oil pressure sending unit is located in the engine block in an oil gallery, the oil pressure sending unit on a Ford Diesel is located in the top of the high pressure oil reservoir. In other words, Ford wants to make sure the high pressure oil reservoir is getting good oil pressure. If the oil “idiot” light does not go out the high pressure oil reservoir isn’t getting enough pressure. The high pressure pump cannot produce high pressure if it’s not getting enough oil from the engine oil pump. If the oil level checks out and the oil pressure light goes out, move on to the rest of the checks.

The PCM monitors RPM during cranking. As soon as RPMs reach 150, the PCM activates the IPR to begin regulating oil pressure. At the same time, the PCM starts monitoring the ICP sensor to double check oil pressure buildup. As mentioned earlier, the PCM can command up to a 60% duty cycle for the IPR. But if the PCM is providing maximum duty cycle and the ICP reports either less than 400psi or 2,000-2,500psi, and the engine is not running, it concludes there is a problem (a reading of 2,000-2,500 is a programmed “default” reading the PCM provides on the scan tool when it believes there’s a fault in the ICP). If you see 2,000-2,500psi on the ICP scan tool readout AND the engine isn’t running, you should suspect a bad ICP sensor.

If the engine won’t start, you can conclude there’s a problem in the high pressure system. Either the high pressure pump isn’t working, IPR is faulty, or there’s a large leak somewhere in the system that’s preventing pressure buildup. To eliminate a cylinder head leak from the troubleshooting process, remove the high pressure line from the right side head and cap it with a plug that can hold 3,000psi. Then remove the high pressure line from the left side cylinder head and attach a high pressure (3,000psi or more) gauge to the line. Then crank the engine and watch the pressure gauge. If you get a low reading, the problem is either a faulty high pressure pump or a bad IPR. First you must replace the IPR. If the problem still exists, replace the high pressure pump.
__________________
99.5 F-250, 4x4,AT,with a few Mods. Carlos Briceno/ Aka Country
Reply With Quote
  #2  
Old 03-31-2011, 01:57 PM
bakerbuilttracks's Avatar
bakerbuilttracks bakerbuilttracks is offline
Elder User
 
Join Date: Sep 2008
Location: TALLAHASSEE FL
Posts: 792
bakerbuilttracks is starting off with a positive reputation.
Wow awesome write up
__________________
BAKERBUILT TRACKS 1999.5 F-250 7.3L SD 4x4, EDGE EVOLUTION MONITOR (for gauges and code reader ), DP-TUNER F6, MBRP 4" TURBO BACK, S&B COLD AIR INTAKE, CCV MOD, WICKED WHEEL, RR IC BOOTS, BD WASTEGATE ACTUATOR, FRx, HPX, IH BELLOWED UP-PIPES, 6.0 TRANS COOLER, 4R100 with (RV T/C, STIFFER ACCUMULATOR SPRINGS, VALVE BODY ), FOIL DELETE, HUTCH and HARPOON, TRAIN HORNS, 35x12.50x20 TOYO A/T II's,
Reply With Quote
  #3  
Old 03-31-2011, 02:55 PM
clintbonnie clintbonnie is offline
Postmaster
 
Join Date: Jun 2003
Location: Ardenvoir, Washington
Posts: 3,023
clintbonnie has a very good reputation on FTE.clintbonnie has a very good reputation on FTE.clintbonnie has a very good reputation on FTE.
A 1211 is a normal code if you have a chip or tuner programmer..
P1212 = ICP voltage not at expected level. "Injector control pressure" Probably air in the system (got this from another forum)
__________________
Clint... Early 99, F350, 4X4, Auto, DRW, S-Cab, Gauges, Diablosport 60 HP, OilGuard, Tru-Cool 28K, 5% Biodiesel, Shell Synthetic 5w40, Western Diesel TurboRamAir, MagnaFlow Exhaust, SSHPX, CCV Mod, Fuel Line/Tank Mod., Speed Bleeders, Bilstiens....
Reply With Quote
  #4  
Old 03-31-2011, 04:49 PM
ChunderDownUnder's Avatar
ChunderDownUnder ChunderDownUnder is offline
Posting Guru
 
Join Date: Apr 2009
Location: Man Cave
Posts: 2,081
ChunderDownUnder has a great reputation on FTE.ChunderDownUnder has a great reputation on FTE.ChunderDownUnder has a great reputation on FTE.ChunderDownUnder has a great reputation on FTE.ChunderDownUnder has a great reputation on FTE.
Great piece of info m8. Gunna print that one out and keep it on file. reps sent.
__________________
Brian
03 F250 XLT LB . Full Engine build with all the goodies.
- cant wait until my motor blows so I can blame someone else -
join the Australian Chapter here-Join Chapter
Reply With Quote
  #5  
Old 04-25-2011, 11:56 PM
spunks00 spunks00 is offline
Senior User
 
Join Date: Oct 2006
Location: Salem, OR
Posts: 320
spunks00 is starting off with a positive reputation.
reps sent...

how do we get this added to the common mod and maintinace link on the top?

EDIT: i sent a PM to a moderator about having this added!
__________________
Tyler
For Sale $9,000, Needs paint
1999 F-350 7.3L PSD, CC, LB, 4X4, SRW, 6spd
6637, Leveled, 285/70r17 MTs, 217k miles
Reply With Quote
  #6  
Old 05-03-2011, 09:21 PM
cookie88's Avatar
cookie88 cookie88 is offline
Moderator
 
Join Date: May 2001
Location: Cabot, Arkansas
Posts: 13,244
cookie88 has a brilliant futurecookie88 has a brilliant futurecookie88 has a brilliant futurecookie88 has a brilliant futurecookie88 has a brilliant futurecookie88 has a brilliant futurecookie88 has a brilliant futurecookie88 has a brilliant futurecookie88 has a brilliant futurecookie88 has a brilliant futurecookie88 has a brilliant future
f250juggernaut
So added. I also put back a whole bunch of other links that had been gone for a while.
__________________
Scott
His: 01 F-250 Lariat, 7.3, ZF-6, NV271
Hers: 06 Freestar SEL 4.2l
79 Bronco Ranger XLT.. used be the driver, now waiting to become the project.
96 Grand Marquis LS... 25 mpg commuter
Reply With Quote
  #7  
Old 09-22-2011, 05:10 PM
sleepyhead416 sleepyhead416 is offline
Senior User
 
Join Date: Aug 2006
Posts: 101
sleepyhead416 is starting off with a positive reputation.
VERY VERY HELPFUL TY for posting.
Reply With Quote
  #8  
Old 09-22-2011, 08:25 PM
nissandoc's Avatar
nissandoc nissandoc is offline
Posting Guru
 
Join Date: Feb 2007
Location: North Cackalacky
Posts: 1,244
nissandoc is a name known to allnissandoc is a name known to allnissandoc is a name known to allnissandoc is a name known to allnissandoc is a name known to allnissandoc is a name known to all
IIRC that is the code that Barney (bfife) had that took him a long time to figure out. Ended up being an injector solenoid. Shoot him a pm and ask.
Reply With Quote
  #9  
Old 11-21-2012, 08:16 PM
hunter7mm08 hunter7mm08 is offline
New User
 
Join Date: Nov 2012
Posts: 1
hunter7mm08 is starting off with a positive reputation.
new member

hello everyone, i just joined this site. i know its cooking nite for most. me as well. i have a 02 250 7.3 with 290k. great truck. putting a sct tuner on it today. kicked back errors. p1249. p0733. p1212 ????? i have reaD
d the posts i could find on these. would appreciate anyones input. i want to fix this truck up nice but dont really know what needs to be done or in what order. help
Reply With Quote
Old 11-21-2012, 08:16 PM
 
 
 
Reply

Similar Threads
Thread Thread Starter Forum Replies Last Post
Runs great cold, horrible when hot. Zejokee 6.0L Power Stroke Diesel 17 05-19-2014 01:44 AM
engine miss and kill when warm. p1280, p1211 cyco 1999 - 2003 7.3L Power Stroke Diesel 3 09-24-2012 10:53 AM
looking for input rideracelivemx7 1994.5 - 1997 7.3L Power Stroke Diesel 20 07-22-2011 12:24 PM
You HAVE to see this video Pocket 1999 - 2003 7.3L Power Stroke Diesel 32 01-15-2009 10:13 AM
Help truck running like poop! SuperDoodie 1999 - 2003 7.3L Power Stroke Diesel 16 06-28-2008 11:40 PM


Go Back   Ford Truck Enthusiasts Forums > Diesel > 1999 - 2003 7.3L Power Stroke Diesel

Tags
1211, 1212, 1999, 2001, 54, 73, 73l, 99, code, diesel, f250, f350, ford, icp, injection, located, oil, p1212, powerstroke, system

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 On
Trackbacks are On
Pingbacks are On
Refbacks are On

Forum Jump


Participate In The Forums

Create new posts and participate in discussions. It's free!

Sign Up »





All times are GMT -5. The time now is 01:47 AM.


Powered by vBulletin® Version 3.8.7 AC1
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Advertising - Terms of Use - Privacy Statement - Jobs
This forum is owned and operated by Internet Brands, Inc., a Delaware corporation. It is not authorized or endorsed by the Ford Motor Company and is not affiliated with the Ford Motor Company or its related companies in any way. Ford® is a registered trademark of the Ford Motor Company.

vbulletin Admin Backup