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  #13  
Old 05-20-2014, 06:56 PM
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Re: New Check Engine Light

Quote:
Originally Posted by amr40509 View Post
Attachment 39944

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


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Just got this same error today, as well as the one about the DPF filter being almost full. I put new DEF in a couple weeks back, it originally showed 3/4 full when I filled it up, now it's showing 90%+ full.

Taking it in the dealer first thing tomorrow.

edit: This is the DEF I put in, looks like it meets all the standards (API and ISO 22241) http://gumout.com/ourProducts/diesel...ubmenuheader=3
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  #14  
Old 05-20-2014, 07:07 PM
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Re: New Check Engine Light

Thanks Willx!

I have printed and will be taking it with me to the dealer.
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  #15  
Old 05-21-2014, 09:47 PM
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Re: New Check Engine Light

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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  #16  
Old 05-22-2014, 05:49 AM
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Re: New Check Engine Light

Quote:
Originally Posted by thebc2 View Post
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.
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  #17  
Old 06-20-2014, 04:00 PM
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Re: New Check Engine Light

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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  #18  
Old 06-20-2014, 04:21 PM
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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.
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  #19  
Old 06-20-2014, 07:07 PM
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Re: New Check Engine Light

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!
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  #20  
Old 06-20-2014, 07:23 PM
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Re: New Check Engine Light

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.
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  #21  
Old 06-20-2014, 09:49 PM
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Re: New Check Engine Light

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

Thanks!
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  #22  
Old 06-21-2014, 03:55 PM
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Re: New Check Engine Light

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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  #23  
Old 06-23-2014, 12:23 AM
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Re: New Check Engine Light

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.
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  #24  
Old 06-23-2014, 06:12 PM
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Re: New Check Engine Light

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.
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