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Discussion Starter #1 (Edited)
Has anyone else had a check engine light come on with OBD code "P0456 EVAP Small Leak"? Tomorrow my Pacifica goes back the second time in three weeks for this code.

Normally, you approach EVAP errors starting with the fuel filler cap and then go from there but we don't have typical yesteryear twist-on fuel caps. I've also noticed that my early summer built Pacifica uses a different mechanism (mine is the shiny one on the left). The other picture was posted by another Pacifica forum member so apparently there has been a design change.

I'm just wondering if anyone has heard of a problem forcing a design change and if it was related to EVAP leaks.
 

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I have not had this problem (yet). My fuel filler looks like yours.
 

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Discussion Starter #4 (Edited)
Can you show us a picture of the door itself @BrettP
Here's a less cropped picture including my door latch mechanism. The thread you referenced is actually where I found out about the alternate filler flap design and where I obtained the picture I just posted. I wondered at that time why the design change was required so early in the 2017 Pacifica cycle and it apparently jinxed me because now I have repeated EVAP codes popping up and am a little suspicious about the design change being relevant to my case...but who knows.

I sure hope I'm not the first to have P0456 OBD codes! I much prefer well understood issues with known fixes, haha. P0456 means EVAP Very Small Leak which sounds like it could be hard to locate. In Texas that one will fail the yearly safety lane inspection so I need a definitive fix while under warranty.
 

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Mine has the new cap. And it "different" to use. On one occasion the pump would click like its full right when I start to fill up. Had to pull out just a bit, and then pull the trigger maybe half way. Also its hard to pull out the nozzle without spilling some gas! I guess it'll take practice. But to me, its not that much more convenient.
 

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Discussion Starter #6
Mine has the new cap. And it "different" to use. On one occasion the pump would click like its full right when I start to fill up. Had to pull out just a bit, and then pull the trigger maybe half way. Also its hard to pull out the nozzle without spilling some gas! I guess it'll take practice. But to me, its not that much more convenient.

When you get a Pacifica with the new design do you also still receive the little plastic funnel for putting additives in the fuel tank or filling from gas containers? I'm just curious why the design changed...is it EVAP leaks, freedom from needing magic funnels, etc..
 

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fuel filler cap

Mine was built in june have old filler system and so far have not had any problems but only have about 4000 miles on it and dont drive much.
 

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Also its hard to pull out the nozzle without spilling some gas! I guess it'll take practice. But to me, its not that much more convenient.
Agree with this. Working on my technique but I thought a cap worked just fine.
 

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Discussion Starter #10
They changed the EVAP system Purge Valve saying it was leaky and returned the van today. I hope that fixes it. It makes sense to me that a leaking EVAP purge valve could definitely throw an EVAP OBD code. The service advisor didn't know why the gas filler valve behind the gas door has been redesigned for newer Pacificas and was in a hurry (closing time) so didn't have time to talk about it.
 

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I have the same filler as you, I have an early build as we bought in June '16. Took my car in a month ago with this code. Was asked if I tried tightening the filler cap, had to mention the car has no cap. Asked if I recently refueled, I had not. Brought the car in and after they did a "smoke test" they couldn't find an issue so they cleared the code. They did some software updates and TSB things so it wasn't a complete waste.

Last week we had the CEL again, same code. Dealer said it was probably a loose filler cap, had to mention the car has no cap. Asked if I recently refueled, I had not. Brought the car in today and waiting to hear back what they found.

On a side note, had a 7am appointment today and decided to stick around while they did initial troubleshooting to see how long the repair may take. After 2.5 hours I asked for an update and the SA looked surprised I was still there and said they were "smoke testing" so I requested a shuttle home. As we left I could see my car parked in the same spot it was after I arrived. At this point I'd rather have them just clear the code instead of wasting my time pretending they are troubleshooting when they are passing this off as a simple loose filler cap CEL.
 

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I have the same filler as you, I have an early build as we bought in June '16. Took my car in a month ago with this code. Was asked if I tried tightening the filler cap, had to mention the car has no cap. Asked if I recently refueled, I had not. Brought the car in and after they did a "smoke test" they couldn't find an issue so they cleared the code. They did some software updates and TSB things so it wasn't a complete waste.

Last week we had the CEL again, same code. Dealer said it was probably a loose filler cap, had to mention the car has no cap. Asked if I recently refueled, I had not. Brought the car in today and waiting to hear back what they found.

On a side note, had a 7am appointment today and decided to stick around while they did initial troubleshooting to see how long the repair may take. After 2.5 hours I asked for an update and the SA looked surprised I was still there and said they were "smoke testing" so I requested a shuttle home. As we left I could see my car parked in the same spot it was after I arrived. At this point I'd rather have them just clear the code instead of wasting my time pretending they are troubleshooting when they are passing this off as a simple loose filler cap CEL.
Hi osubeaver,

Please reach out in a PM with your VIN and contact info if you would like me to follow up with the dealership for you.

Kori
Chrysler Social Care Specialist
 

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When you get a Pacifica with the new design do you also still receive the little plastic funnel for putting additives in the fuel tank or filling from gas containers? I'm just curious why the design changed...is it EVAP leaks, freedom from needing magic funnels, etc..
Yes, you still get the little funnel. My build date is 3/7/17. I just took delivery on 3/25 and wondered what that little funnel was for. Now I know. :)
 

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I looked this morning and I don't see it. Only tire psi recommendation. Also,OEM installed features.
,
It's on the edge of the door itself, not the door jam.
 

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I've also noticed that my early summer built Pacifica uses a different mechanism (mine is the shiny one on the left). The other picture was posted by another Pacifica forum member so apparently there has been a design change.

I'm just wondering if anyone has heard of a problem forcing a design change and if it was related to EVAP leaks.
For information purposes, my L Plus has a build date of 11-15 and has the fill cap like the red Pacifica picture aka "old" version.

Has there been any official explanation of the design change?
 

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I have the same filler as you, I have an early build as we bought in June '16. Took my car in a month ago with this code. Was asked if I tried tightening the filler cap, had to mention the car has no cap. Asked if I recently refueled, I had not. Brought the car in and after they did a "smoke test" they couldn't find an issue so they cleared the code. They did some software updates and TSB things so it wasn't a complete waste.

Last week we had the CEL again, same code. Dealer said it was probably a loose filler cap, had to mention the car has no cap. Asked if I recently refueled, I had not. Brought the car in today and waiting to hear back what they found.

On a side note, had a 7am appointment today and decided to stick around while they did initial troubleshooting to see how long the repair may take. After 2.5 hours I asked for an update and the SA looked surprised I was still there and said they were "smoke testing" so I requested a shuttle home. As we left I could see my car parked in the same spot it was after I arrived. At this point I'd rather have them just clear the code instead of wasting my time pretending they are troubleshooting when they are passing this off as a simple loose filler cap CEL.
Just an update if anyone is researching the CEL. After my second visit to the dealer it was confirmed that the purge valve was leaking and after it was replaced we haven't had a CEL since
 
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