P0456 Evap System Leak

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Jun 30, 2018 | 09:49 AM
  #1  
I reset this once but it came right back after a few days. The gas cap is about 3 years old. I found a post by H2OBoy and it talks about a canister pipe. Can anyone tell me where this pipe is locatged? Also, Is the CCV in the wheel well? Is it worth changing it out?




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Jun 30, 2018 | 03:22 PM
  #2  
It was 2 things on my 2004 xk8
That message haunted me for 6 months. It turned out to be 2 things, a split in the "U" shaped hose that connects to the CCV valve, the split was under the clamp so not visible. I replaced that with a similar hose I found on the racks at my Carquest store. It got better after that, but still showed up occasionally. I then replaced the CCV valve and the problem has not showed up for 2 years. I know the attached picture is hard to figure out, but it is looking straight up above the rear axle on the right side. The hoses that go into the charcoal cannister.
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Jun 30, 2018 | 03:37 PM
  #3  
Another possibility for leak.
Quote: I reset this once but it came right back after a few days. The gas cap is about 3 years old. I found a post by H2OBoy and it talks about a canister pipe. Can anyone tell me where this pipe is locatged? Also, Is the CCV in the wheel well? Is it worth changing it out?


My buddy has a 2005 XKR, on investigating his car we found that the battery vent hose was leaking onto the charcoal cannister and had eaten through the plastic. A dab of black silicone reset the light and it solved the issue.
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Jun 30, 2018 | 03:41 PM
  #4  
When I worked on these cars at the dealer we always had to be aware of Recalls/Service Actions and TSBs.
Lots of info from me and many other forum members abuut Jaguar issued bulletins.
Please read through them and they will answer many questions plus give an understanding about the system.

Some may apply to certain cars and others NOT.

A sampling of what is available.

bob


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Jul 10, 2018 | 05:52 AM
  #5  
Quote: When I worked on these cars at the dealer we always had to be aware of Recalls/Service Actions and TSBs.
Lots of info from me and many other forum members abuut Jaguar issued bulletins.
Please read through them and they will answer many questions plus give an understanding about the system.

Some may apply to certain cars and others NOT.

A sampling of what is available.

bob
Thanks for the files.
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Jul 19, 2018 | 07:33 AM
  #6  
Cracks
I can't say this is the problem, but I am sure this is not helping. I need to get under there over the weekend and try and fix.




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Aug 3, 2018 | 07:41 AM
  #7  
So, I fixed the hoses on the rear axle, reset, the code came back after two drives.

Next Evap Canister Purge Valve in the front wheel well?
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Aug 5, 2018 | 09:07 AM
  #8  
Canister Close valve
I had the same problem on my 2000 xK8. After replacing the gas cap, o rings and hoses the problem persisted. I finally replaced the canister close valve and that did it. My evap emission system is behind the rear axle, I believe your car is the same. The CCV is located between the two canisters and there is an electrical connector for it. Pretty easy to get to. I believe what is located in the wheel well is a "purge" valve not the CCV.
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Aug 6, 2018 | 06:29 AM
  #9  
Quote: I had the same problem on my 2000 xK8. After replacing the gas cap, o rings and hoses the problem persisted. I finally replaced the canister close valve and that did it. My evap emission system is behind the rear axle, I believe your car is the same. The CCV is located between the two canisters and there is an electrical connector for it. Pretty easy to get to. I believe what is located in the wheel well is a "purge" valve not the CCV.
Thank you for this info. I appreciate it.
Rich
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