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  #37  
Old 06-30-2014, 10:17 PM
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Re: Incorrect DEF - See dealer

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Originally Posted by Goonbash View Post
Excursion, quick question. Does your wk2 have the ORA2 skidplates? Wondering if they could help act as a heat shield against hot summer asphalt cooking the DEF? Thanks.
Yes, ORA2 so I have the skid plates. The plastic DEF tank sits in a metal bucket that encompasses the bottom 80% of the tank so it is well protected. The exhaust splits and goes around the tank so the mufflers are a heat source.

At this point, I don't know if I have bad DEF or a bad sensor. Hopefully, we can get to the bottom of it tomorrow. I have 160 miles and 60 to drive to the dealer. They have promised a loaner. I literally feel sick over this...I have a general distrust of dealerships although my good friend is the owner. My Jeep was among the first produced so maybe it just needs updates.

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  #38  
Old 07-01-2014, 11:12 AM
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Re: Incorrect DEF - See dealer

At the dealer waiting. So far, several TSBs where applied, DEF tank drained and refilled. Vehicle test driven long enough to clear the "xxx miles remaining until engine won't start" message. Now, we're getting a CEL for a bad NOx sensor. Oddly, the service tech said the DEF tank was almost empty and, as I reported here, I've filled it to nearly 100% in the last few days.

It is possible that my DEF level sensor is not working, I have a leak, ran it empty, got the warnings, refilled to show 100% and cleared the warnings, leaked it all out again, and warnings came back. That's a lot of issues all at once...I'm totally stumped.

EDIT: Bad info from the tech. The tank was NOT drained and refilled. The ultrasonic level sensor showed empty...then full. He claims only a low DEF level will cause the shutdown messages. I explained that "Incorrect DEF" messages where displayed before the shutdown warnings happened. I dont trust their abilities to logically diagnose issues.
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  #39  
Old 07-01-2014, 04:55 PM
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Re: Incorrect DEF - See dealer

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Originally Posted by ExcursionDiesel View Post
I dont trust their abilities to logically diagnose issues.
This right here is what frustrates me the most about dealer service departments. I wonder how some of these people make it though life.

Good luck getting your problem(s) resolved!
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  #40  
Old 07-01-2014, 09:42 PM
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Re: Incorrect DEF - See dealer

Any idea exactly how they cleared the "xxx miles remaining"? I took mine back from the dealer with a fresh tank of DEF while they're waiting on the new catalytic converter. I've put about 50 miles on it and continually try to reset the P20EE but the countdown continues. I drop it off again tomorrow for the long weekend.


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  #41  
Old 07-01-2014, 11:22 PM
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Re: Incorrect DEF - See dealer

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Originally Posted by Koko View Post
Any idea exactly how they cleared the "xxx miles remaining"? I took mine back from the dealer with a fresh tank of DEF while they're waiting on the new catalytic converter. I've put about 50 miles on it and continually try to reset the P20EE but the countdown continues. I drop it off again tomorrow for the long weekend.
The only way to clear the "xxx miles" countdown is to satisfy the built-in emissions test which include DEF quality and NOx quantities. The P20EE is the NOx sensor not seeing low enough emissions. Could be bad DEF, DEF injector, DEF pump, bad NOx sensor, etc.

Mine sits in the shop as I drive a loaner...minivan...yay.
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  #42  
Old 07-07-2014, 11:52 AM
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Re: Incorrect DEF - See dealer

I have had my 3.0 Summit in numerous [I have really lost count] times for the P20EE code. So far all they have done is replace the DEF pump. They have not said anything about bad DEF, however, I have over a half a tank left with 7K miles on the vehicle. Maybe they had to refill the tank when they replaced the pump. Anyway, trying to get another appointment with the dealer. Hmmm, wonder why they don't call me back!
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  #43  
Old 07-07-2014, 12:10 PM
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Re: Incorrect DEF - See dealer

My new catalytic converter comes tomorrow. That makes it about two weeks that they've had my vehicle with nothing else being done. I highly doubt this will solve the problem. Is anyone getting better answers or solutions to the P20EE?


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  #44  
Old 07-07-2014, 12:32 PM
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Re: Incorrect DEF - See dealer

Quote:
Originally Posted by Koko View Post
My new catalytic converter comes tomorrow. That makes it about two weeks that they've had my vehicle with nothing else being done. I highly doubt this will solve the problem. Is anyone getting better answers or solutions to the P20EE?
No answer from my dealer...still waiting.
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  #45  
Old 07-07-2014, 03:10 PM
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Re: Incorrect DEF - See dealer

Check out this forum about Chevy diesels from 2012 with same issue of bad/poor DEF quality. They seem to think the issue is the NOx sensor(s).

http://www.duramaxforum.com/forum/2011-lml-duramax-powertrain/148411-another-low-quailty-def-cel-p20ee-p27f-3.html

See this also, related to Ford Diesels, same issue, but it includes check for improper open circuit connections:
http://www.ford-trucks.com/forums/attachment.php?attachmentid=89346&d=1390343700

The TDI Club also reports this error as far back as 2010. Some of those were found to have a urea pump that was not pumping enough DEF.

Here is another from Chev/GMC where it is suggested it could be related to use of red or old fuel, but the consensus seems to be the NOx sensor:
http://www.dieselplace.com/forum/63-gm-diesel-engines/365-duramax-fifth-generation-2011-lml/510513-cel-code-p20ee.html
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  #46  
Old 07-07-2014, 08:12 PM
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Re: Incorrect DEF - See dealer

My dealer told me that it may be the NOx sensor but they don't have the tool to test it. They are waiting on another unrelated part before they can get back in the P20EE issue. I have a feeling I won't see my ride for several weeks. I'm grateful I have a loaner from them.
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  #47  
Old 07-08-2014, 09:46 PM
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Re: Incorrect DEF - See dealer

New catalytic converter finally arrived. They took it out of the box and immediately broke the O2 sensor. Saying another 4 days....


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  #48  
Old 07-09-2014, 12:01 PM
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Re: Incorrect DEF - See dealer

Where's the facepalm smiley?
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