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6.0L Power Stroke Diesel 2003 - 2007 F250, F350 pickup and F350+ Cab Chassis, 2003 - 2005 Excursion and 2003 - 2009 van

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Old May 25, 2017 | 08:08 PM
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Fault codes

Ok guys hear we are again another problem lol I need some help again anyway in the picture below are the fault codes I'm getting with my torque pro for my 03 6.0. The two codes I'm concerned about is the first and second. Now before this I was getting fault codes that said low circuit or low current to cylinder 4 and cylinder 4 contribution/balance just like I have now only now I don't have low current on cylinder 4 anyway I changed the injecter in cylinder 4 got ride of the low current but still have the contribution/balance. So with that said I'm almost afraid to ask. Is it possible I could have gotten a faulty injecter. I'm still getting some buckin when I'm pullin hills with puffs of black smoke no white just black. Now with the second code what could that be I clicked on the Web look up and I don't understand what the description for the fault code means. Also I tested my ficm and everything is good there also the truck has been bullet proofed before I purchased it and the injecters were all replaced at one point acording to the carfax. Now the truck does roll a little coal not much just a little so is it possible that the contribution/balance could be due to the fact that maybe when the injecters wear replaced in the past they put bigger injecters in and when I replaced cylinder 4 I obviously put a stock injecter in I'm pulling my hair out hear lol please help thanks in advance
 
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Old May 25, 2017 | 08:18 PM
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The P0401 may be a plugged EGR valve. It could also be some discord between MAP, EBP, and IA2 sensors, if memory serves.

I would clean the EGR valve first, easy task.

I occasionally get that code towing after a couple hours. I've been wanting to clean EBP and MAP tubes but I don't have any issues when the code shows up so I haven't sweated it much.
 
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Old May 25, 2017 | 08:53 PM
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Wear is the EGR valve located and how do I clean it. I'm pretty mechanically inclined so I'm sure I can do it I'm just still learning about these 6.0's thanks again
 
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Old May 25, 2017 | 09:00 PM
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Originally Posted by packagerjr
The P0401 may be a plugged EGR valve. It could also be some discord between MAP, EBP, and IA2 sensors, if memory serves.

I would clean the EGR valve first, easy task.

I occasionally get that code towing after a couple hours. I've been wanting to clean EBP and MAP tubes but I don't have any issues when the code shows up so I haven't sweated it much.
also the MAP and EBP and IA2 sensors wear are they located and are you saying it's possible they could need changed and I'm guessing these sensors are probably expensive lol as most things I'm finding out are expensive on these diesels is there any way I can narrow it down without changing all of those and could this be linked to the bucking and puffs of black smoke. Lol feeling a bit overwhelmed at this point
 
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Old May 25, 2017 | 09:26 PM
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Here is a really good place to study the location of 6.0 engine parts.
Powerstroke 6.0L Technical Intro Manual
 
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Old May 25, 2017 | 09:54 PM
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You said you put a stock injector in, but was it a motorcraft injector or from another supplier?
 
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Old May 25, 2017 | 09:58 PM
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Originally Posted by bismic
You said you put a stock injector in, but was it a motorcraft injector or from another supplier?
unfortunately it was not a Motorcraft I got a reman from diesel care I have heard that Motorcraft injecters work better with the powerstrokes but funds were limited so I had to go with something cheaper
 
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Old May 25, 2017 | 10:02 PM
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I hear ya, but sometimes it doesn't work out to be cheaper!

Could you summarize the mods? You said the truck was "bulletproofed". What does that mean, and does it include an EGR delete?

Also, what torque value did you use for the injector hold down (and was the torque wrench calibrated)?
 
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Old May 25, 2017 | 10:15 PM
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Originally Posted by bismic
I hear ya, but sometimes it doesn't work out to be cheaper!

Could you summarize the mods? You said the truck was "bulletproofed". What does that mean, and does it include an EGR delete?

Also, what torque value did you use for the injector hold down (and was the torque wrench calibrated)?
Unfortunately I don't have much Intel on what was done when it was bulletproofed other than the heads were studded the injecters were changed and there was not an EGR delete other than that I have no idea the dealer I purchased the truck from didn't have anymore info on the truck other than the carfax report. as far as the hold down I believe I put 20 or 25 foot pounds of torque and the torque rench was definitely not calibrated.
 
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Old May 25, 2017 | 10:19 PM
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28 ft-lbs is a common recommendation, although the Ford value is 24 and (EDIT) IMO 26 would be pushing it for the T40 hold-downs.

IMO, next to improper cleaning of the hold down bolt hole and the injector cup and bore, improper torque is a common issue. Most people are too far out of calibration on their torque wrenches and aren't aware of it.

If the EGR valve and cooler are still installed and operational, then the P0401 is telling you something (packagerjr pretty much has it covered). If you were deleted, that could be the cause of the code.
 

Last edited by bismic; Oct 18, 2025 at 10:40 AM.
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Old May 25, 2017 | 10:32 PM
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Originally Posted by bismic
28 ft-lbs is the most common recommendation, although the Ford value is 24.

IMO, next to improper cleaning of the hold down bolt hole and the injector cup and bore, improper torque is a common issue. Most people are too far out of calibration on their torque wrenches and aren't aware of it.

If the EGR valve and cooler are still installed and operational, then the P0401 is telling you something (packagerjr pretty much has it covered). If you were deleted, that could be the cause of the code.
as far as cleaning out the hold down bolt hole and the injecter cup and bore I'm confident I cleaned them out pretty good but you kinda lost me when you said if I was deleted that could be the cause of the code. By that do you mean that I could have a problem with the EGR and it does need deleted or do you mean something else by that? Also I'm afraid to ask this question but hear it goes when I torqued the hold down bolt I had to use an extension on the torque rench I'm kinda thinking that might have been a no no and I didn't get enough torque because of the extension
 
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Old May 25, 2017 | 10:36 PM
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If you have an EGR delete and you don't have a tuner to adjust the combustion tuning, then you can get a P0401 code.

When you still have a functional EGR system, then P0401 means:

EGR - Insufficient flow. EGR valve stuck .... or possibly a bad EBP sensor or a stuck turbo. Coupled with a P0299 DTC could mean a plugged exhaust or plugged MAP hose or EBP tube.
 
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Old May 25, 2017 | 10:47 PM
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Originally Posted by bismic
If you have an EGR delete and you don't have a tuner to adjust the combustion tuning, then you can get a P0401 code.

When you still have a functional EGR system, then P0401 means:

EGR - Insufficient flow. EGR valve stuck .... or possibly a bad EBP sensor or a stuck turbo. Coupled with a P0299 DTC could mean a plugged exhaust or plugged MAP hose or EBP tube.
so start with cleaning the EGR valve if that doesn't fix it I guess go to the EBP sensor or the possibility of a stuck turbo however I'm not getting the P0299 DTC code is there any other sines of a stuck turbo like a lack of boost or something like that and when you say plugged exhaust I'm thinking your referring to the Cat right? I'm sorry for all the questions I'm pretty new at these 6.0's and there's a lot to take in
 
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Old May 26, 2017 | 03:30 AM
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No problem with the questions!

I would probably do all three things:
1. pull and clean EGR valve (need to look up "how to". Use carb cleaner and don't get the solvent in the solenoid holes).
2. Remove the MAP sensor hose and verify it isn't plugged or cracked.
3. Remove EBP sensor and check. Run a long strand of thick weed eater string through the EBP tube to ensure it isn't plugged.

Get a scan tool and verify that MAP, EBP, and Baro (barometer) all read within 0.2 psi of each other at KOEO.
 
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Old May 26, 2017 | 08:19 AM
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Originally Posted by bismic
No problem with the questions!

I would probably do all three things:
1. pull and clean EGR valve (need to look up "how to". Use carb cleaner and don't get the solvent in the solenoid holes).
2. Remove the MAP sensor hose and verify it isn't plugged or cracked.
3. Remove EBP sensor and check. Run a long strand of thick weed eater string through the EBP tube to ensure it isn't plugged.

Get a scan tool and verify that MAP, EBP, and Baro (barometer) all read within 0.2 psi of each other at KOEO.
ok so now that we got all that straightened out thank you I forgot to mention with these codes I also have a small miss every now and then while idling. Also you mentioned getting a tuner like I said I'm kinda new to this stuff so I was wondering is a tuner the same as a programmer I've herd guys say tuner then I've herd them say programmer if there two different things do I need just one or both?
 
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