Notices
Cayenne 958 - 2011-2018 2nd Generation
Sponsored By:
Sponsored By:

P0456 Minor Evap Leak Code, Where to start diagnostic?

Thread Tools
 
Search this Thread
 
Old 07-07-2024, 11:05 AM
  #1  
DarkSideDesigns
7th Gear
Thread Starter
 
DarkSideDesigns's Avatar
 
Join Date: Dec 2023
Posts: 7
Likes: 0
Received 1 Like on 1 Post
Default P0456 Minor Evap Leak Code, Where to start diagnostic?

So I recently got the evap code on my 2012 Cayenne Turbo, and I'm looking to fix it. I had a friend with a 958, and I tried his gas cap just to see if it was that, no luck.

I've read that the leak detection pump sometimes goes bad, or potentially some hoses are worn out. Any suggestions for diagnosis? I'd just like to get the code cleared as reg. Is coming up in a few months. I'm not afraid to wrench myself, as I'm a mechanic, just always ask the experts to get a bit better direction.

Old 07-08-2024, 02:39 PM
  #2  
Quadcammer
Race Director
 
Quadcammer's Avatar
 
Join Date: Nov 2006
Location: Clifton, NJ
Posts: 15,659
Received 1,389 Likes on 806 Posts
Default

best way is to smoke test it. Mine was from the LDP
Old 07-08-2024, 03:26 PM
  #3  
DarkSideDesigns
7th Gear
Thread Starter
 
DarkSideDesigns's Avatar
 
Join Date: Dec 2023
Posts: 7
Likes: 0
Received 1 Like on 1 Post
Default

Originally Posted by Quadcammer
best way is to smoke test it. Mine was from the LDP
any ways to do it without pulling off the wheel and taking off the wheel liner to test? Im sure its inevitable, this is just my first porsche so still getting comfortable with the maintenance.
Old 07-09-2024, 10:46 AM
  #4  
Quadcammer
Race Director
 
Quadcammer's Avatar
 
Join Date: Nov 2006
Location: Clifton, NJ
Posts: 15,659
Received 1,389 Likes on 806 Posts
Default

Could hook the tester up in the engine bay to test all the lines as well, but if its from the LDP, you may struggle to see any leaks without pulling the liner.
Old 07-09-2024, 10:58 AM
  #5  
DarkSideDesigns
7th Gear
Thread Starter
 
DarkSideDesigns's Avatar
 
Join Date: Dec 2023
Posts: 7
Likes: 0
Received 1 Like on 1 Post
Default

Originally Posted by Quadcammer
Could hook the tester up in the engine bay to test all the lines as well, but if its from the LDP, you may struggle to see any leaks without pulling the liner.
I figured as much, but it doesn't hurt to ask. I've taken the liner off before to install the tow hitch, so it's really not that bad. Just hope there was some special secret haha.
Old 07-09-2024, 12:14 PM
  #6  
twodollardoug
Three Wheelin'
 
twodollardoug's Avatar
 
Join Date: Mar 2014
Location: calimesa ca.
Posts: 1,948
Received 346 Likes on 241 Posts
Default

Mine turned out to be the tank solenoid vent valve.



Quick Reply: P0456 Minor Evap Leak Code, Where to start diagnostic?



All times are GMT -3. The time now is 03:30 PM.