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What does it actually take to make a P0401 error code repair
http://www.lostjeeps.com/forum/phpBB3/viewtopic.php?f=5&t=49158		 Page 1 of 1
Author:  Gump [ Mon Jan 11, 2010 11:09 pm ]
Post subject:  What does it actually take to make a P0401 error code repair
Hello All,
Gump is Grumpy and is looking to find out if he just got taken!
Service has already been done. Wanting to learn to do this right the next time.

A few weeks ago my engine light came on. For 2 weeks it would come and go and then it stayed. I already had to take my 2006 Liberty in for an oil change so I mentioned the light to the dealer to look into it.

I have been a member of this forum since early 2006 shortly after I got my 06 Liberty CRD that I custom ordered. I was following this site heavily into early 07 and then moved and stopped reading, so I have not been privy to some of the new info out there since. I did some searches but this new forum seems to not return much anymore. Looks like I will have to go back and start reading the threads again to catch back up.

So back to my issue...
I'm 3 months out of my warranty and did not get the extension. Possible mistake. I no longer have a garage to do my own repairs but I may have a few family members who might let me use theirs in the future.

Service has been done (this is directly from my service sheet):

Cust states ck engine light on
Check engine light is on. Data trouble code P0401, tested
EGR valve and Air Flow control valve both very slow to move
(sticking) EGR cooler is sooted.
Removed and replaced EGR valve, Air Flow control valve and
cleaned out EGR cooler.

Then the parts:

5166555-AB, Valve EGR 14038024, $193.60
5142815-AA, Gasket EGR V 900100, $3.65
5142617-AA, Gasket EGR C 140620, $10.50
68048953-AA, Antifreeze Co 108100, $21.95
68028729-AA, Cleaner EGR 1081080, $26.60
5142799-AA, Valve Electr 140330, $338.80
5142806-AA, T/Body EGR 140330, $1.92
5142613-AA, Gasket EGR A 900100, $2.05
5170053-AA, Hose None 7014005, $39.52
5170054-AA, Hose None 7014005, $43.95
NMPROLOC, 3M Roloc Dis, $12.16
5066946-AA, Gasket None 9001004, $4.29

Thats $1078.99 in parts only.

Can anyone who has had an EGR go bad tell me they had to have all this replaced for 1 EGR failure and Air Flow control valve?
I have been looking on the web for price comparisons to purchase the EGR valve and the Air Flow Control but have not found them for my vehicle model. Are these prices in range of your experiences?
Do you have suggestions as to where to find these parts at a cheaper rate or is this typical?

I was also told the EGR will get sooty if I let me engine idle. I have been letting the vehicle warm up in the mornings and I was always told to let it idle for a few minutes before going anywhere. Is this not correct?

Any info that can be said to help Gump not be Grumpy or to accept the service results and learn for the future, would be greatly appreciated.

I will do more research, particularly the EGR and the Air Flow control valve.

Sincerely,
Grumpy Gump
Author:  onthehunt [ Mon Jan 11, 2010 11:22 pm ]
Post subject:  Re: What does it actually take to make a P0401 error code repair
That looks right assuming both the egr and flow control valve were both bad. It's an expensive vehicle to repair, even if you do the work yourself.
Author:  linewarbr [ Tue Jan 12, 2010 5:02 pm ]
Post subject:  Re: What does it actually take to make a P0401 error code repair
You could save $1000 (after labor) and just purchase a Green Diesel Engineering tune for $550. Then the EGR is an unnecessary piece of plumbing attached to the side of the engine.

Others have suggested disassembling the EGR, removing the solenoid, and soaking it in #2 to clean the soot DIY.
Author:  linewarbr [ Tue Jan 12, 2010 5:09 pm ]
Post subject:  Re: What does it actually take to make a P0401 error code repair
Gump wrote:
I was also told the EGR will get sooty if I let me engine idle. I have been letting the vehicle warm up in the mornings and I was always told to let it idle for a few minutes before going anywhere. Is this not correct?


This is incorrect. The EGR valve only opens under partial throttle application. At idle or WOT, it remains closed.

Can I ask you why you would want to repair the EGR, rather than disable it? You could unplug the MAF sensor to disable the EGR and stop the flow of exhaust (read: soot) into the intake. Link here: viewtopic.php?f=98&t=22631 It will cause a Check Engine Light, but it is a good temporary fix until you can make a decision on a GDE tune, other tune, or SEGR, which all affect EGR recirculation. Soot in the intake of a diesel is BAD.
Author:  RogueCRD [ Tue Jan 12, 2010 10:03 pm ]
Post subject:  Re: What does it actually take to make a P0401 error code repair
Gump wrote:
Thats $1078.99 in parts only.


Thats a lot of money. I thought it was around $700 but I never fully researched it. I drove around with P0401 for about 9 months and considered cleaning it myself, but I just forgot about it. After about 9 months, the CEL finally turned off.
Author:  Gump [ Wed Jan 13, 2010 1:23 am ]
Post subject:  Re: What does it actually take to make a P0401 error code repair
linewarbr wrote:
Gump wrote:
I was also told the EGR will get sooty if I let me engine idle. I have been letting the vehicle warm up in the mornings and I was always told to let it idle for a few minutes before going anywhere. Is this not correct?


This is incorrect. The EGR valve only opens under partial throttle application. At idle or WOT, it remains closed.

Can I ask you why you would want to repair the EGR, rather than disable it? You could unplug the MAF sensor to disable the EGR and stop the flow of exhaust (read: soot) into the intake. Link here: viewtopic.php?f=98&t=22631 It will cause a Check Engine Light, but it is a good temporary fix until you can make a decision on a GDE tune, other tune, or SEGR, which all affect EGR recirculation. Soot in the intake of a diesel is BAD.



I failed to mention as well as update my profile, but I am now living in Beaverton, Oregon and our vehicles have to pass a Smog test in order to renew the license. After finding the site and reading the Policy and Warranty information for the GDE tune, I do not think it is legal for me to apply this tune.

Quote:
DISCLAIMER: Not legal for sale or use on any emission controlled motor vehicles. Legal in California only for racing vehicles which may never be used on a highway. For off-road racing use only.
http://www.greendieselengineering.com/goPage.do?method=policy
Author:  Gump [ Wed Jan 13, 2010 1:27 am ]
Post subject:  Re: What does it actually take to make a P0401 error code repair
RogueCRD wrote:
Gump wrote:
Thats $1078.99 in parts only.


Thats a lot of money. I thought it was around $700 but I never fully researched it. I drove around with P0401 for about 9 months and considered cleaning it myself, but I just forgot about it. After about 9 months, the CEL finally turned off.



Sorry, my bad. You are correct. It was $699 just for parts.
Fluids, labor and Oil change raised it to $1215
Author:  linewarbr [ Wed Jan 13, 2010 12:06 pm ]
Post subject:  Re: What does it actually take to make a P0401 error code repair
Gump wrote:
I failed to mention as well as update my profile, but I am now living in Beaverton, Oregon and our vehicles have to pass a Smog test in order to renew the license. After finding the site and reading the Policy and Warranty information for the GDE tune, I do not think it is legal for me to apply this tune.

Quote:
DISCLAIMER: Not legal for sale or use on any emission controlled motor vehicles. Legal in California only for racing vehicles which may never be used on a highway. For off-road racing use only.
http://www.greendieselengineering.com/goPage.do?method=policy


It depends on how they do the test. If they hook up an OBD II scanner to test emissions compliance, then you will fail if you are running ORM and do not clear the code before going to get it inspected. The GDE tune, however, only changes the limits in the engine computer to activate the EGR, so the computer will not report emissions non-compliance. That means you would pass.

If they do a smog opacity test, then you could actually fail in stock condition depending on the running quality of your engine. You almost certainly would fail currently, with the EGR issues you are having. So you're caught between paying $1200 to the dealer to repair a system that, while mandated by the EPA, does long-term harm to a diesel engine - affecting future emissions - or paying $550 to get a tune that will increase performance, mpg, and bypass the harmful EGR system.

At that point, it's really a matter of conscience. But I know that I positively affect the environment by:
A.) getting as many mpg as possible
B.) owning a vehicle that can reduce my "carbon footprint" by burning biodiesel
C.) owning my vehicle for hundreds of thousands of miles and keeping it well-maintained means that I avoid the environmental impact of purchasing a new vehicle and my old one having to be dealt with.
Author:  onthehunt [ Wed Jan 13, 2010 12:09 pm ]
Post subject:  Re: What does it actually take to make a P0401 error code repair
I do believe the egr is open at idle but closes after 30 seconds or so to protect it from sooting up.
Author:  UFO [ Wed Jan 13, 2010 12:36 pm ]
Post subject:  Re: What does it actually take to make a P0401 error code repair
EGR is for controlling oxides of nitrogen and has almost nothing to do with an opacity test. If your CEL is not on, there is no way Oregon diesel emissions testing is going to know about a GDE tune or a SEGR. :jester:
Author:  linewarbr [ Wed Jan 13, 2010 3:28 pm ]
Post subject:  Re: What does it actually take to make a P0401 error code repair
onthehunt wrote:
I do believe the egr is open at idle but closes after 30 seconds or so to protect it from sooting up.


EGR stays closed at idle and WOT; it only opens during part-throttle application. Mine stays closed all the time unless I am in a rare turbo overspeed situation. . . :mrgreen:
Author:  CATCRD [ Thu Jan 14, 2010 8:29 pm ]
Post subject:  Re: What does it actually take to make a P0401 error code repair
Mine just passed emissions test here in colorado with the Inmotion tune (also not for road use). The emissions station will never know you have the GDE tune. They check if your CEL is lit and then check exhaust opacity. Mine passed with flying colors.
Author:  isx2009 [ Thu Jan 14, 2010 11:08 pm ]
Post subject:  Re: What does it actually take to make a P0401 error code repair
What percent was your test. Mine was 2 percent with no mods at all.
Author:  Drewd [ Tue Jan 19, 2010 11:30 pm ]
Post subject:  Re: What does it actually take to make a P0401 error code repair
Gump,
Did you find an online vendor that has great prices for these parts? After 50k miles, I'm tired of the CEL and will be replacing my EGR and AFCV. I'll get the GDE tune too but want a working EGR incase the tune needs to use it.

Thanks,
Drew
Author:  Gump [ Wed Jan 20, 2010 12:04 pm ]
Post subject:  Re: What does it actually take to make a P0401 error code repair
Drewd wrote:
Gump,
Did you find an online vendor that has great prices for these parts? After 50k miles, I'm tired of the CEL and will be replacing my EGR and AFCV. I'll get the GDE tune too but want a working EGR incase the tune needs to use it.

Thanks,
Drew


I have not anything yet and I have already had the work done at my dealership. I am now considering the GDE Tune and Provent mod.
Author:  Drewd [ Wed Jan 20, 2010 1:51 pm ]
Post subject:  Re: What does it actually take to make a P0401 error code repair
I found a website jeepoemparts.com that had a lower price on the AFCV than the one you posted $288.

You have two hoses listed. Does anybody know if these need to be replaced or can they be reused?

Thanks!
Author:  UFO [ Wed Jan 20, 2010 2:02 pm ]
Post subject:  Re: What does it actually take to make a P0401 error code repair
Drewd wrote:
I found a website jeepoemparts.com that had a lower price on the AFCV than the one you posted $288.

You have two hoses listed. Does anybody know if these need to be replaced or can they be reused?

Thanks!

If they are original, they are probably failing. Check to see if they are sweating oil. I replaced mine with a set of Samco hoses, others have reported that the OEM type are improved.
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