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  #1  
Old 06-27-2014, 11:25 PM
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Incorrect DEF - See dealer

During a long trip, I began getting CEL codes P20EE "SCR NOx Catalyst Efficiency Below Threshold" and then today P2BA9 "NOx Exceedence - Insufficient Reagent Quality"

I filled up with DEF at Pilot Truck Stop from a pay pump about 2 months and 4k miles ago. No codes before then. I had 50% DEF today when I got the "Incorrect DEF - See dealer" message and it reoccurs on startup.

I immediately went to Walmart and bought a siphon pump and fresh 2.5 gal BlueDEF with a 3/2014 lot code date. I figured I siphon out as much as I can and replace with fresh fluid. Well, the DEF tank is apparently located far from the filler with a complex filler neck route...so I added the 2.5 gal of fresh DEF to the old.

Does anyone know how often the onboard diagnostic tests execute? I've read the "pending codes" require a certain number of drive cycles to clear. I have 5 miles and 3 restarts on it since adding DEF and I still get the message. I feel a limp mode situation coming soon if I don't get it to sense good fluid.

Also, has anyone accessed the DEF tank? Is there a drain?

I hate the EPA...Thanks for any input.
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Old 06-28-2014, 05:08 PM
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Re: Incorrect DEF - See dealer

FYI - I added another gallon of fresh DEF after the "Engine won't start in 200 miles" message. I drove 25 miles and restarted several times. The CEL light didn't come on again after I cleared it yesterday but an active P2BA9 code was down on my scanner. I restarted in the driveway after returning home and all codes and warnings are gone.

So it looks like adding enough fresh DEF may fix things in some cases. Thank God I was at a half tank so I could add.
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  #3  
Old 06-28-2014, 07:14 PM
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Re: Incorrect DEF - See dealer

Happy to hear it worked out okay.
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Old 06-28-2014, 07:46 PM
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Re: Incorrect DEF - See dealer

I'm curious if the lot date was actually shown as manufactured 3/2014 or was it part of the 11 digit ISO code.


I purchased the Blue DEF with an 11 digit ISO date stamp as follows:


The number on the box was 11152440637


This is my understanding of how to read the code:

[ 1-2 ] Manufacturing Facility (i.e. 11)
[ 3-4 ] Year Manufactured+1 (i.e. 15 -1 = 2014)
[ 5-7 ] Days left in year (i.e. 244 or (i.e. May 1st, 2014)
[ 8-11 ] Batch code (i.e. 0637)

I had to go to the back of the shelf at walmart to find the 2015 year. The DEF in the front had a 2014 code indicating it was manufactured in 2013.
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Old 06-29-2014, 01:51 AM
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Re: Incorrect DEF - See dealer

I had the date code like you described. Mine was xx15267xxx
So it was '14 with 267 days remaining...March-April time frame.

So far so good. My worry is that I have 50/50 blend of bad+fresh DEF. I hope it lasts long enough to run it down for a fresh refill.
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Old 06-29-2014, 06:05 AM
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Re: Incorrect DEF - See dealer

You definitely got a fresh batch. I would think you should be okay.
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Old 06-29-2014, 08:03 AM
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Re: Incorrect DEF - See dealer

My advice after this is to NEVER fill more than 50% from a DEF pump. You can't tell if its stale or not so leave room to top off with concerned fresh store bought DEF in the event that you get an "Incorrect DEF - See Dealer" message.
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Old 06-29-2014, 09:39 AM
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Re: Incorrect DEF - See dealer

Thanks for sharing this. I really hope your DEF problems are cured. This reinforces my theory of always running off the bottom half of the DEF tank. My fear has been heat damaging the DEF. Thus, I keep the level low so I can add fresh DEF before trips. Realize that a quarter tank of DEF should last over 2,000 miles, so there is no real concern of running out before I have a chance to add some.
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Old 06-29-2014, 10:14 AM
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Re: Incorrect DEF - See dealer

Quote:
Originally Posted by ExcursionDiesel View Post
My advice after this is to NEVER fill more than more than 50% from a DEF pump. You can't tell if its stale or not so leave room to top off with fresh store bought and confirmed DEF.
That's how I treat my Ram.
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Old 06-29-2014, 10:18 AM
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Re: Incorrect DEF - See dealer

Funny you should mention heat. My first CEL codes started with "Insufficient NOx treatment efficiency" while I was on vacation in Florida...and it was HOT that week.
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Old 06-29-2014, 12:56 PM
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Re: Incorrect DEF - See dealer

Quote:
Originally Posted by ExcursionDiesel View Post
Funny you should mention heat. My first CEL codes started with "Insufficient NOx treatment efficiency" while I was on vacation in Florida...and it was HOT that week.
Do you know the number on that?
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Old 06-29-2014, 01:27 PM
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Re: Incorrect DEF - See dealer

Quote:
Originally Posted by mtnmerlin View Post
Do you know the number on that?
Here's the progression if codes I got as the DEF went from marginal to bad.

First I started getting these....
P20EE - SCR NOx Catalyst Efficiency Below Threshold

Then I got this code....
P2BA9 - NOx Exceedence - Insufficient Reagent Quality

Soon after that I got a message on the EVIC "Incorrect DEF detected - See dealer." I got this on every startup for maybe 50 miles of operation. This is when I posted my experience on the forum. I added 2.5 gal of fresh DEF.

Then I got the "won't start in 200 miles" message. I added an additional 1.5 gal of fresh DEF which topped off the tank. The no start in xxx warning persisted for another 30 miles and 4 restarts then finally cleared in its own, presumably when good DEF was detected.
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The founder of JeepGarage.org, Scottina06, has a son Max who is in need of corrective surgery from an infection at birth that left one leg 4 inches short. We need to support our Jeep brothers. His family has started a fund on giveforward.com. If you have ever been helped by someone else, now is a good time to pay it forward. Here is a link to that page. God bless you! http://gfwd.at/1rz33PW
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