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  #13  
Old 09-04-2013, 05:21 PM
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Re: 2014 GC CEL Misfire

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Originally Posted by Hotmilk View Post
I'm just as confused but he did mention something about the heads but not sure as to why he would have said that since I have a 14. I ran the code myself this time and found the evap code. Maybe he was confused on what car I was describing because it was very busy at the time.

Would this evap code cause power loss though?

It's all under warranty so only thing it's causing me is time, but would like to know it is in fact common and that I didn't receive a lemon
If the evap leak is the typical bogus one, there is no effect on the engine, as there is no leak or anything wrong other than firmware [or possibly a bad sensor].

Engine stumbling/misfire is something else entirely... presuming you are not filling up at Hatfield & McCoy Moonshine Drippings something more serious seems to be going on.
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  #14  
Old 09-04-2013, 05:30 PM
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Quote:
Originally Posted by lstowell View Post
If the evap leak is the typical bogus one, there is no effect on the engine, as there is no leak or anything wrong other than firmware [or possibly a bad sensor].

Engine stumbling/misfire is something else entirely... presuming you are not filling up at Hatfield & McCoy Moonshine Drippings something more serious seems to be going on.
The evap leak can cause a limp home mode which means that engine power would be severely reduced (also due to shift map changes) I was not surprised at the behavior that he was describing.
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Old 09-05-2013, 06:05 PM
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So Saturday they did the update and a reflash. Today they did a radio update and smoke test which determined that I had a didnt have a leak at all and just a bad esim switch. They replaced the switch and vapor seal and it corrected the MIL and my power was restored.

I'd like to say thanks to all the responses and help. I really appreciate it
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  #16  
Old 09-05-2013, 06:56 PM
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Re: 2014 GC CEL Misfire

Quote:
Originally Posted by Hotmilk View Post
So Saturday they did the update and a reflash. Today they did a radio update and smoke test which determined that I had a didnt have a leak at all and just a bad esim switch. They replaced the switch and vapor seal and it corrected the MIL and my power was restored.

I'd like to say thanks to all the responses and help. I really appreciate it
Thanks for letting us know the outcome. Knowing what they did will probably help someone deal with their service department down the road.


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  #17  
Old 10-06-2013, 05:47 AM
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Re: 2014 GC CEL Misfire

So not even a month goes by and guess what??? I get a P0456 code again. I call the service department and give them the info and that I also need an oil change and a 6 month vehicle inspection. I take my Jeep there on 10/2 and they perform the inspection/oil change and an TSB update that the lady says will cause it to come on. I went on to tell her that the TSB update was for something totally different and thats only going to reset the current code and a temp fix, since nothing was done to the p0456 code. She says it shouldn't come back and I told her if it does, which i'm expecting it to.

Well last night I am driving and low and behold the CEL comes back on. I'm furious at this point. I get to my destination and see if it is the same code and now its the P0455. Large leak detected in the EVAP system. So im assuming that the small leak that it was 4 days ago has turned into the Large leak code.

Of course the service dept. isn't open on Sundays so will have to wait for Monday to have this issue addressed once again. (I really want out of my lease) This dealership seems to take shortcuts by resetting codes for a temp fix to make customer happy, instead of just fixing the problem. Not only is it a pain to keep having to drive 30 min out of the way but thats gas/mileage on my lease that I do not want to keep adding.

Anyones 2 cents would be helpful

Thanks
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Old 10-06-2013, 08:54 AM
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Re: 2014 GC CEL Misfire

Could be caused by a loose or improperly fitting gas cap. Since the '14 is "different", I'd check the sealing area for an obstruction that might prevent it from closing properly.
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  #19  
Old 10-08-2013, 01:53 PM
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It is cap less fill. First thing the they asked.

I dropped it off this morning and they found a small crack in the filler tube which opens up and creates the large leak code when given gas. They need to keep it overnight and will be ready tomorrow morning. All covered under warranty.
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Old 03-10-2014, 07:46 AM
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Re: 2014 GC CEL Misfire

917 miles on my 2014 Jeep GC.
Same problem .
3 times in the last 3 days that the CEL came on. The dealer resets the light but that did not stop the issue.
Its at the dealer again.
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