Tuesday, February 25, 2025

Jeep JK Wrangler P0456 Code - Fixed!

Chasing the dreaded P0456 check engine light code seems to be a recreational hobby for some Jeep owners.




I'd had a P0456 code, and sometimes a P055 code on my 2013 Jeep JK Wrangler for an embarrassingly long time... like several months, on and off.  For a while, I just ignored it. 

I had inspected all the evap hoses, smoke tested it, replaced the gas cap, and more. It ran ok.

Then I realized I needed to pass emissions, like uhh, now.

Here's what I did.  I replaced the vapor leak detection pump.

It is a small part located on the rear underneath the vehicle. It's really easy to change. It took me about 15 minutes total, and all I needed was a flathead screwdriver. 

For a few days after clearing the code, I drove my Jeep about 100 miles on the freeway and surface streets to make sure the check engine light didn't come back on, like it did every other time I thought I'd fixed something. 

It stayed off (yay!), so I went to the emissions testing facility, and passed! 

While every vehicle is different, this is what worked for me. It may not fix your P0456 code, but the part was pretty cheap and very simple to change. It's worth a try if you're not sure exactually what's causing your Jeep to tell you that you have an evap leak. 

Check out my video that shows you how to swap it out! 




Here's a link to the part I used: 


Check your vehicle specifics first, but the same part should fit these years: Jeep JK Wrangler 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 





tags: #howto #fix #repair #change #replace #auto #automotive #jeep #jk #wrangler #checkenginelight #smogcheck #inspection #rubicon #unlimited #4x4 #garage #diy #dorman #evap #p0456 #code #p0455 #emissions #pass #evap #leak #small #large #system #pump #part #2013 #2007 #2008 #2009 #2019 #2011 #2012 #2014 #2015 #2016 #2016 #2018 

This post contains an affiliate link, where I make a few cents if you choose to buy the same product I did, but don't worry, it doesn't affect the price you pay, and I only recommend things that I actually purchased and liked.