Trouble codes p0401, p0275, and p0341. Please help! - Ford Powerstroke Diesel Forum
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Old 01-19-2013, 11:03 PM
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Trouble codes p0401, p0275, and p0341. Please help!

I have a 2004 ford 6.0 completely stock except for superchip flashpaq tuner. I pulled the codes on it and this is wat I got. P0401 exhaust gas recirculation insuff detected and p0275 cylindar 5 contibutional/balance fault. The p0341 camshaft pos sens circ perf (bank1/sens1) It runs with a rough idle and wen cold bucks at 60mph and up. i feel a huge loss off power and hesitates wen i get on the throttle. My EGR valve went out in 2010 and I had a buddy that worked at ford get the ends welded up and put it back in as a deleter. Was I wrong for going that route? Could it be a sensor? As for the p275 cylinder 5 code. Could that be my #5 injector? I find a lot of good threads about these codes but I always end up lost. Any help is greatly appreciated.


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Old 01-20-2013, 09:29 AM
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first check for excessive blow by.
if none, try disconnecting the #5 injector. see if idle remains the same. there is a good chance the injector is bad. occasionally, they do fail on these trucks lol. especially during colder climates
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Old 01-20-2013, 01:52 PM
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Trouble codes p0401, p0275, and p0341. Please help!

Thank you for the good feedback. What's the best way to check for blow by? Through the oil fill cap? Compression test? Once I do check, how do i tell if its the piston, or head gaskets, or ect...


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Old 01-20-2013, 04:50 PM
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just use the oil fill cap method. check first. then we can worry about where it's coming from
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Old 01-24-2013, 03:11 PM
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Trouble codes p0401, p0275, and p0341. Please help!

So I got good news. No smoke no vapor and no pressure of any kind coming out of the fill cap. So now my next step would be testing the injector? I ordered a cam sensor for the p0341 code but I could not find the specific location to of the sensor. They say on the 04 6.0 it's right below the p/s pump. Any ideas or photos? I greatly appreciate all the help.

Thanks, Doc


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Old 01-24-2013, 04:09 PM
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Re: Trouble codes p0401, p0275, and p0341. Please help!

First, the egr code is probably cause you have essentially deleted the egr, the cam/crank code is likely from rough idle, or erratic starup, I wouldn't rip it out just yet. If your vin has "4ea" in it you have an early ficm, and it is possible to drop a single injector. It appears that you do not have a decent monitor, I highly suggest getting a monitor. Load test your batteries amd perform the ficm check procedure COLD to eliminate that as a potential problem. Make sure you are running motorcraft or racor filters with oem cap only, and a good quality oil. It may be worth your time to check your fuel filters and fuel pressure also. Do you have the updated fpr blue spring? Here is where you can check the fuel pressure, with a 12x1.5mm adaper on the side of the fpr......
I would also check the harness for chafing, and make sure your ficm connectors are seated. I'm sure i'm forgetting something......lol.

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Old 01-24-2013, 04:14 PM
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Re: Trouble codes p0401, p0275, and p0341. Please help!

Monitoring........Write Up: Monitoring the 6.0L PSD.


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Old 01-24-2013, 05:22 PM
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Trouble codes p0401, p0275, and p0341. Please help!

Yes my vin does have the 4ea in it. And as well I forgot to mention. A couple months ago I had my FICM repaired cause all my injectors were reading low. But right after that is when these codes popped up. As in monitors, what are some good ones. And how much would one run me?


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Old 01-24-2013, 05:28 PM
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Re: Trouble codes p0401, p0275, and p0341. Please help!

If your ficm was bad, and you didn't test the batts, it's possible your ficm was damaged again. Bad batts kill ficms, quick. I have an edge cts, $320+. You can pickup a scanguage II at autozone for $160. Also, you should put your truck back to stock, amd evaluate it from there, not so sure your choice of tuner is best for the 6.0.

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Old 01-24-2013, 07:51 PM
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bad ficm or wiring fault will usually set a circuit code. good chance when the ficm went south, it took the injector with it
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