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6.0 P0404 Engine Code

3436 Views 45 Replies 3 Participants Last post by  Mitchellgrawe, 
Mitchellgrawe
So here we go, first off I am not sure if all of these events are connected or just problems unrelated but I think they are. I was driving to one of my customers houses and I got P0404 engine code, (also was blowing a bit of black smoke but no a lot) drove to where I need to be and having a cheap scanner I saw it was EGR related so I pulled the valve and the o rings were chewed up. Neither one was gone but the bottom one had a good tear but was still in tact. So I replaced the o rings and felt it seat it and I even used a bit of oil to lube them up. It worked for about 4-5 days and then booms engine code again P0404 (no smoke this time)…so I replaced the valve altogether and reset the code….I didn’t notice much of a change. I don’t think I have drove it long enough for it to read a check engine light heat, about 70 or so miles. But two weeks prior to the o rings being chewed up I was driving a dump trailer loaded down probably weighed about 7-8k total coming down a two lane highway and I was going to cross over to an access road and as I did this boom no trailer lights. So I pulled over and to me the truck was running different than before. I looked under the fuse boxes two days later and sure enough two fuses had blown, 38 and 4. I also notice a sort of chatter upon acceleration that is harder than before. I pulled the air intakes to take a look at the EBP sensor pigtail and one of the pins was black as the other two were copper looking. So I replaced the pigtail and the engine tan great I started to hear that turbo really whistle and felt the power then poof I made one turn into a neighborhood then it started back again…I ordered an new EBP sensor and I will update if that changes anything but I suspect it will run well then it will acclimate to the computer and run rough again just guessing. Too I pulled the VGT solenoid and the connector broke inside the solenoid like the plastic bits so I quickly plugged it bag inside and order a new pigtail. No difference there but i figured that was a good practice to prevent future problems there. Now one thing to highlight is that I keep getting the SH code from my trailer brake controller making me think I still have a shirt somewhere but I looked and looked but can’t find a bad looking wire. Both batteries are good and alternator is good. I just bought the truck about two months ago and it was running great and then the trailer thing happened… which makes me thing it is possible the trailer had a bad ground and fried a bunch of parts in my truck. I replaced the fuel filters that they had in them that weren’t oem with oem ones along with oem oil filters and changed the cap back to the OEM. Too I replaced the CAG boots on Botha ends as they had one small non stock blue tub on one side and what looked like a ford one on the other side but I still replaced both. Please help, I will update what the EBP does. Let me know what y’all think.
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Mitchellgrawe
bismic said:
What model year?
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2004 F350 4x4 srw 8ft bed crew cab lariat 6.0 power stroke
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Mitchellgrawe
bismic said:
What model year?
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2004 F350 4x4 srw 8ft bed crew cab lariat 6.0 power stroke
bismic said:
So, the 2004 could have had the 2003 engine installed. Next question - where is your ICP sensor located?
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I am guessing next to the turbo behind the ficm and degas bottle I was in there yesterday I guess I can check that out. My ebp sensor came in so I’ll be installing that tonight.
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Mitchellgrawe
bismic said:
If your ICP is behind the turbo, then your model year strategy (03) does not even use the EBP sensor .........
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I know I have an ebp sensor…
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Mitchellgrawe
Mitchellgrawe said:
I know I have an ebp sensor…
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I just replaced the pigtail
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Mitchellgrawe
Where else would it be so I can check if it isn’t that one?
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Mitchellgrawe
bismic said:
You need a very good code reader to pick up some of the Ford codes. Average scan tools and tuners do not do a very good job.

Fortunately ForScan and ForScan Lite are excellent and are cheap. The full version for a Windows laptop is free (you do NOT need to pay for an extended license) and the Lite version for a smartphone is a $6 download. You do need an adapter - the USB version for the laptop and a WiFi for iOs or BlueTooth for Android. If you are interested, we can help you pick out a good adapter.

The inferred EBP strategy uses the MAF sensor, IAT2, and MAP sensor, and the VGT (turbo actuator) to properly control the turbo.

Since you have a new (and hopefully good) EBP sensor, use your scan tool to find EBP (may not be able to), MAP, and Baro at KOEO (key on - engine off), and post those values.
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bismic said:
You need a very good code reader to pick up some of the Ford codes. Average scan tools and tuners do not do a very good job.

Fortunately ForScan and ForScan Lite are excellent and are cheap. The full version for a Windows laptop is free (you do NOT need to pay for an extended license) and the Lite version for a smartphone is a $6 download. You do need an adapter - the USB version for the laptop and a WiFi for iOs or BlueTooth for Android. If you are interested, we can help you pick out a good adapter.

The inferred EBP strategy uses the MAF sensor, IAT2, and MAP sensor, and the VGT (turbo actuator) to properly control the turbo.

Since you have a new (and hopefully good) EBP sensor, use your scan tool to find EBP (may not be able to), MAP, and Baro at KOEO (key on - engine off), and post those values.
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I forgot to mention my catalytic converter has a crack in it. I’m not sure if this has an effect on any of this. When I get home I will read more in Seth. I don’t think my scammer can read that. It was $15
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Mitchellgrawe
bismic said:
I am on pretty much all of the 6.0L forums and I think you will find that most people that are willing to help will now expect you to get ForScan or Torque Pro (unless you already have a more expensive and capable tool). It gets too expensive to guess and most people don't like suggesting things that are not fairly certain to help.
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Okay I will look for one tomorrow
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Mitchellgrawe
bismic said:
I am on pretty much all of the 6.0L forums and I think you will find that most people that are willing to help will now expect you to get ForScan or Torque Pro (unless you already have a more expensive and capable tool). It gets too expensive to guess and most people don't like suggesting things that are not fairly certain to help.
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I have the Hyper tough scanner will it do what you are asking? I can read engine codes
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Mitchellgrawe
bismic said:
What I am saying is that it may not read all the codes.

I certainly am not familiar with all the options that exist today, but time-and-time again ForScan has proven to be more thorough than all but the Ford IDS system and several other high end systems.

What I read about the Autel HT is consistent with most cheap scan tools - it is not a thorough code OR PID reader.
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So Forscan, what do I buy, where do I buy?
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Mitchellgrawe
Mitchellgrawe said:
So Forscan, what do I buy, where do I buy?
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I found the website with the lite and free version you were talking about. So do I get the lite free version or do I need the trial to read those other ones. Also for the scanner to usb can I use any available at a auto store? Would I be able to read everything from my phone if I got the IOS version?
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Mitchellgrawe
Mitchellgrawe said:
I have the Hyper tough scanner will it do what you are asking? I can read engine codes
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These three I have found. I want to do the cheap one but if I have to I’ll buy the $70 one. But $120 for a scanner is it really different than the others?
www.amazon.com

Amazon.com: vgate vLinker FD Plus OBD2 Adapter Bluetooth BLE Scanner for FORScan, Work with iPhone, Android, and Windows : Automotive

Buy vgate vLinker FD Plus OBD2 Adapter Bluetooth BLE Scanner for FORScan, Work with iPhone, Android, and Windows: Code Readers & Scan Tools - Amazon.com ✓ FREE DELIVERY possible on eligible purchases
www.amazon.com

www.amazon.com

Amazon.com: Vgate vLinker MC+ Bluetooth OBD2 Car Diagnostic Scan Tool for iPhone iOS, Android & Windows : Automotive

Buy Vgate vLinker MC+ Bluetooth OBD2 Car Diagnostic Scan Tool for iPhone iOS, Android & Windows: Code Readers & Scan Tools - Amazon.com ✓ FREE DELIVERY possible on eligible purchases
www.amazon.com

www.obdlink.com

OBDLink® MX+ - Outstanding Bluetooth-Compatible OBD II Scan Tool

The OBDLink® MX+ is the top-of-the-line OBD II scan tool to use with forscan and comes with bluetooth. Get one here today and gain access to your vehicle!
www.obdlink.com www.obdlink.com
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Mitchellgrawe
bismic said:
again - are you putting it on an iphone, an Android, or a laptop?
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I’m asking will I be restricted with an iPhone?
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Mitchellgrawe
bismic said:
The full version (which can do quite a few tests that the Lite version can't) is for a Windows laptop only.

The Lite version for the Android and the iPhone work essentially the same.

The money spent on an adapter will dictate how quickly the data transmission is, update rates, and maybe a few other features that most people would never even notice if they had it,

Even though ForScan is phasing out the EM327 support, my BAFX (ELM) WiFi adapter works fine with my iphone and it is $36.

I'll bow out now. Lot to do .............
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Mitchellgrawe
www.amazon.com

Amazon.com: Exhaust Back Pressure EBP Tube Sensor & Wire Replacement for 2003-2004 Ford 6.0L Powerstroke Diesel - Exhaust Back Pressure Tube : Automotive

Buy Exhaust Back Pressure EBP Tube Sensor & Wire Replacement for 2003-2004 Ford 6.0L Powerstroke Diesel - Exhaust Back Pressure Tube: Exhaust Gas - Amazon.com ✓ FREE DELIVERY possible on eligible purchases
www.amazon.com

EBP sensor I bought doesn’t look like the one I have in my truck but it says that it’s for the year of my truck…
That one is the one I bought and when I pulled It looked like this one…

www.amazon.com

Amazon.com: Alliant Power Exhaust Back Pressure (EBP) Sensor for the 2003-2010 6.0L Power Stroke Engine | Alliant Power # AP63408. : Automotive

Buy Alliant Power Exhaust Back Pressure (EBP) Sensor for the 2003-2010 6.0L Power Stroke Engine | Alliant Power # AP63408.: Exhaust Gas - Amazon.com ✓ FREE DELIVERY possible on eligible purchases
www.amazon.com

if you say you don’t think it’s that I think i will send it back and get the reader you referenced. Should be here over night
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Mitchellgrawe
blitzin247 said:
Buy only

Genuine Motorcraft sensors. I cheaped out and bought a generic EBP sensor and it didn't even last two weeks.
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How do you check for Map and baro? I got the bafx Wi-Fi adapter. I also have Forscan lite on my phone do I need a computer?
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Mitchellgrawe
Mitchellgrawe said:
How do you check for Map and baro? I got the bafx Wi-Fi adapter. I also have Forscan lite on my phone do I need a computer?
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Mitchellgrawe
blitzin247 said:
You should be able to select them as a PID. but I'm not sure, I haven't used Forscan lite. I have the full version used on a lap top. I would think the lite should monitor them.
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Okay I’ll do that when I’m parked I posted all the codes o was getting. It’s amazing with that cheap thing I got nothing but $25 more and now I’m reading all this. I’ll be doing research this afternoon
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Mitchellgrawe
blitzin247 said:
You should be able to select them as a PID. but I'm not sure, I haven't used Forscan lite. I have the full version used on a lap top. I would think the lite should monitor them.
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Key on truck off this is what they read I’m not sure if this is what you are asking for.

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Mitchellgrawe
blitzin247 said:
Keep an eye to see if the injector code comes back...that could be part of your problem.

That middle baro at 4.5 v looks suspect to me. But I'm not too sure on the 03/04 motors because they are different with the EBP. Mark would know better.
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What about all the other codes? I think I have an electrical problem that has progressively gotten worse. Not sure but I know my truck isn’t running quite like it should. Brakes feel weird, putting my foot on the pedal feels off. All those electrical codes man. Is there a way to pin it to one harness or anywhere I should look??
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