DEF injection controls NOX Output. Have you checked to make sure your DEF injector isn't cracked? We now know that the injector isn't protected and can be damaged by road debris, snow, off roading, even deep water.

 

Light came on during a sunny drive home church.

I did add new def (2.5g) on Friday and filled up with diesel Saturday.

I'll call the dealer in the morning.


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Topped off the DEF with a fresh jug from Wal-Mart Friday.


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View attachment 39944 Topped off the DEF with a fresh jug from Wal-Mart Friday.

Was the fluid API Certified and have an ISO 22241 standard? If not then it was the wrong DEF fluid. Also do not overfill the tank as well as it needs expansion from heat (does not have a breather vent on the tank).

 

I think that the new DEF might be outdated or the sensor may be defective. All of the DEF containers have a numerical date code that gives the production date to give you some indication of the remaining life if it was stored at moderate temps.
Also, wouldn't the DEF tank require some sort of a pressure-vacuum relief system or valve to allow the liquid to be pumped?

 

Expired DEF can show that message (sensor detects effectiveness)

 

I'm betting sensor. I got the same error almost exactly a month ago and cleared the code.

The gauge showed 1/3 tank of DEF when I added 2.5g of 'new looking' DEF in the Wal-Mart parking lot. I didn't check date, but the packaging looked brand new.

It then showed 3/4 tank full.


Now it's showing totally full and giving the code.


Product added was Peak branded Blue DEF
"BlueDEF® meets ISO Standards 22241 for purity and composition and is an American Petroleum Institute (API) certified DEF."

 

Dealer says it was a computer flash update (as well as transmission controller, stereo amplifier, limited slip controller, and climate control updates)

We shall see.

 

Today I walked out of the house hit the remote start mine shut off.

I got in hit the start button and my error message "service DEF System see dealer".

I had 3/4 of a tank of DEF ! I hooked up my code reader my error code says

P20E9 Reductant pressure to high.


Just happens I already have an appointment for the dealer because 2 days ago I got another message on the sirusxm that said " check antenna see dealer for service". They had ordered parts for TSB on the antenna.

I have had my JGC for 6 months with no problems up till 2 days ago.

I hope this is not the start of things starting to go bad.

I just called my dealer and spoke to the service mgr who happens to be my neighbor he said " we get ambulances and other vehicles all the time with that message usually there is nothing wrong we just reset the code"

I am not sure I like the sound of that just reset the code,obviously there is some kind of problem somewhere that is cause vehicles to throw similar codes all having to do with the stupid smog crap attached to our USA vehicles.

You guys from Aus do not have all the DPF,DEF systems is that correct?

I will report back their findings.

I was hoping to go 1 year with no problems and then was going to do deletes.

This is how the problems started with my 12 2500 cummins 12k on it (last year before DEF),O2 sensors going bad, 38 days in the shop in 14 months before I got rid of it.

My dealer got me out of the 2500 and into the Jeep with out a big hit.

 

Anyone with MIL on 2014 Jeep Grand Cherokee 3.0 Diesel should familiarize yourself with this TSB

It Corrects a lot of false codes being thrown. This is a PCM update.

http://www.wk2jeeps.com/tsb/tsb_wk2_1801814b.pdf

Brought to you buy the Wonderful folks at WK2Jeeps.com

 

Oooh - that's a good one. Mine has been in the shop for over a week due to various codes thrown related to the reductant and DPF. I've been waiting for a new sensor, but will see if they've tried this one.

Thanks Willx!

 

Thanks Willx!

I have printed and will be taking it with me to the dealer.

 

Just an update that maybe helpful to the community.

I took the Jeep in to the dealer and we identified the root cause.

In the end, this all came down to the oil change calculation software bug. The first time I was prompted to change my oil (2500 miles) my service advisor tried to talk me out of it. I am used to doing my new cars' first oil change around 3k miles anyway so I went ahead with it. The service advisor told me to ignore the next warning and to come back at 12,500 for my next one.

Fast forward 5 months later, I got my next warning to change my oil and ignored it. A week or so later I refilled my def (was in the red) and a week after that I got a check engine light.

I called my service advisor to schedule an appointment to bring my Jeep in but they were overbooked. Earliest appointment was over a week away, I asked my advisor if he was sure it was ok to drive it in the meantime. He said as long as the check engine light was solid and I didn't see any further issues it was fine.

A couple days later I got the warning that my DPF was almost full and that I should drive at highway speeds for awhile to clear it out. I jumped on the freeway for about 15 miles and couldn't get the regen to start. I then got an "incorrect def" warning. At that point I headed home and planned to take the jeep in first thing in the morning.

This morning I took it in at 7:30am and I got a call at noon that it was ready. All they did was apply the TSB for the oil change bug. That cleared the engine light and they immediately took it for a drive and a regen kicked off almost immediately.

I spoke to the service manager and he believes the check engine light prevented the jeep from going into regen.

Lessons learned:

1) don't trust your SA when he says to ignore a warning.
2) a check engine light will prevent your jeep from starting a regen, get it looked at.
3) get the oil consumption TSB done


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I spoke to the service manager and he believes the check engine light prevented the jeep from going into regen.

Lessons learned:

1) don't trust your SA when he says to ignore a warning.
2) a check engine light will prevent your jeep from starting a regen, get it looked at.
3) get the oil consumption TSB done


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All good info, there is one point of clarification though. The engine light on it's own will not prevent Regen. I had mine on for a DEF issue for a couple of weeks and it Regens just fine.

However, if the Light is triggered do to an oil "problem" it may prevent Regen because there are a few select issues that could negatively affect a Regen. I do however completely disagree with the SA, simply ignoring the oil change warning was not a good idea. It should have been reset along with the TSB and the mileage counted from that point.

 

Any word on how anyone solved the "Incorrect DEF" issue? Mine popped after getting the TSB flash. Told the dealer to double check the vehicle actually accepted the flash then just clear the code.

Also, what are the consequences of continued driving? Is this a 'shutdown after 200 mile' or a 'no REGEN' kind of problem?


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No regen will eventually put the vehicle in limp mode when the exhaust restriction becomes too high. In US cars, the warning you get is pretty much the final warning before limp mode. At that point the dealer will have to trigger a regen in the shop.

I'd think an incorrect DEF code would have the same behavior as an empty tank.

 

This might be a dumb question, but after 6,000 miles and just adding another 5 gallons of Def, how do you know when it is regening?? Is there a indicator light that I am missing??

Thanks!

 

There is no indication on the vehicle. The fuel mileage will decrease but there are no lights or messages.

Those of us with ODB2 readers watch the CAT temperature. It jumps to 1200 °F during regen. Most are using a Bluetooth adapter and an app on their phone or tablet. The Scanguage 2 is a nice guage that shows various running conditions. I have both the BT adapter/app and the Scanguage2. The Scanguage sits in my cubby and is running all the time unless I want extended info from the app.

 

Thanks for the info. I thought I must be missing something since I kept reading about people knowing their system was in regen...

Thanks!

 

Dealer left the car plugged in overnight and killed the battery. Recharged and re-flashed it today but couldn't clear the "incorrect DEF". Now I have the "vehicle will not start in 200 miles". I know the flash is voltage sensitive, should I have them flash it a 3rd time?


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I just got the "Incorrect DEF" message and check engine light today while driving on the freeway. My car is at just over 850 miles, DEF gauge says 100%. Not enthused... I really hope it's just that the DEF I've got is old and not something more pervasive. My build date is 5/2/14 so it should already have the latest PCM flash version.

I stopped by Autozone and picked up a box of Peak Blue DEF, checked the date stamp to make sure it was fresh. (Thanks FajitaMidland!) Will take it to the dealer tomorrow and try to get them to use it when they refill the tank.

Koko I hope yours gets fixed. No offense but I hope I don't end up in the same boat that you're in. [emoji33]

 

Took my Jeep to the dealer today. They found code P2BA9 "DEF Reductant Quality". They just cleared the code and took the car for two (count 'em TWO!!) test drives and no further codes were thrown. They also confirmed that my PCM already has the latest software. Hopefully that's the end of it but I don't have a warm fuzzy feeling for whatever reason.

I had already thought about buying an OBDII scanner but now I'm convinced that I need one.

 

So they just cleared the code? Any issues since?

My dealer told me the code wouldn't clear, but that was after they failed to load the flash, then killed my battery, then tried to flash it again. I highly doubt they did anything. I'm out of town so they get to keep the car for a week, but I haven't heard from them since Saturday.


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No issues yet, knock on wood. I drive ~40 highway miles per day for my commute, so I should be hitting regens at least once every other week. If nothing crops up by the 4th I'm going to call it good.

 

Despite my adamant suggestion to check the flash and clear the code, Chrysler has apparently told the dealer to remove the DEF tank and inspect all lines for kinks or cracks. I'm assuming the known issue of the cracking DEF nozzle would give a different indication than "incorrect DEF"?


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For what's its worth. My SA reflagged the GC 2x but had I only had a quarter tank of diesel. After filling it up and hitting the highway for as it 30 minutes everything reset itself and was good to go.


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Hello Guys,

Sorry it took so long for me to get back to this discussion,I have been super busy,and we had our 13yr dog get sick and pass away within 3 days,last week.

My error code P20E9 Reductant pressure to high.

With the error message I got about the reductant pressure to high I did not get any other error.

I verified the error code I got and checked with my own OBDII reader before I took my Jeep to the dealer and when I called the dealer them what I found they then they told me not to clear the code that they needed to see the codes them self before they would do the PCM reflash.

Mine was repaired so far with no more problems after getting the PCM re flash that Willis posted early in this discussion.

I will report if I experience any more problems.

All of these problems being reported here are very similar to problems I had with 12 2500 Ram Cummins.

The problems are all from the EPA crap forced to be attached to ALL new Diesels.

Our fearless leader Obama is punishing the USA with his political agenda,the USA already has the most stringent AIR pollution laws in the world!!

China makes more air pollution in 1 day than the USA makes in 1 year.

ON EDIT: Let the USA alone (NO MORE REGULATION) let the rest of the world catch up to our standards before the govenment impose more on the USA

The EPA is one those government agency's gone to abuse of power!
Where was the EPA BEFORE THE GULF OIL SPILL,as we now know there were numerous safety violations before the spill, the oil companies did not have the proper spill containment in place before the spill which they were require by law to have in place before they started to drill. There were hundreds of EPA violations which the oil companies never got 1 fine.

It seems Obama will do most anything to to force his so called "green energy policy" on the USA.

In case you did not know Obama paid 3 times the cost of diesel fuel for fuel for our NAVY grown from algae than to buy DIESEL fuel for our navy.
http://www.forbes.com/sites/jeffmcmahon/2012/02/26/obamas-favorite-algae-company/

I did not intend to make this political but it all relates to why we have all the crap attached to our diesel vehicles finally making it to the USA that Europe and other countries have had for years without all the crap attached to them.

I have an office in Germany and own a VW TDI passat wagon there,it easily gets 45 MPG + while running 120 mph + down the autobahn. My wife has a 13 VW Jetta TDI here in the USA that gets 42 mpg local driving and 50mpg on the hwy.
We also own a 1984 Mercedes 190D here in the USA with 170k on the clock with absolutely no air pollution crap and gets 30mpg city and 40mpg hwy.

Good luck to all having these problems.

 

Yesterday i got the "service def system. See dealer" message. 6000miles on my diesel gc. I checked the code via torque app. It was code P20E9 just like Dsent got on his. I will take it in next week and mention the reflash TSB and hope that fixes it.

Does anyone know if i will eventually get the "jeep wont start in 200 miles" message or if that is just for more serious issue like broken def injector? I have to drive a fair bit before i can take it in next week. Thanks.