p0456 and p0442 Small/Medium Evap leak - Page 2 - JeepForum.com
Sign Up   Today's Posts
User: Pass: Remember?
Advertise Here
Jeep Home Jeep Forum Jeep Classifieds Jeep Registry JeepSpace Jeep Reviews Jeep Gallery Jeep Clubs Jeep Groups Jeep Videos Jeep Events Jeep Articles
Go Back JeepForum.com > Models > Jeep Grand Cherokee & Commander Forums > WJ Grand Cherokee Forum > p0456 and p0442 Small/Medium Evap leak

The Cure for your Tie Rod Roll!Steering and more from Ruffstuff!Introducing MONSTALINER™ UV Permanent DIY Roll On Bed Line

Unread 11-02-2011, 12:31 PM   #16
Registered User
2003 WJ 
Join Date: Dec 2010
Location: Denver, Colorado
Posts: 259
Originally Posted by orb View Post
No codes yet, the gas cap may have worked!! So excited, hope it stays this way.

The cap didn't have a part number on it when it came, it was only listed on the amazon site. Looked brand new though, couldn't tell it had been used.
****. It came back. P0442. I really don't want to take the bumper off. ugh.

2003 4.0L, OME HD Springs, OME Nitro Shocks, Rancho SS, 265/70R16 General Grabber AT2s
orb is offline   Reply With Quote Quick reply to this message
Unread 11-02-2011, 01:56 PM   #17
Registered User
2000 WJ 
Join Date: Jun 2010
Location: Massachusetts
Posts: 1,571
same issue here. on my second gas cap thinking the press relief style cap might be causing it. took a long time for it to come back on this time. seems that it comes on after a few short trips as opposed to long trips. the jeep only made long trips until today and it came back on. mine has graduated to a large leak too.
1AAdam is offline   Reply With Quote Quick reply to this message
Unread 11-02-2011, 05:13 PM   #18
Registered User
Join Date: Aug 2008
Posts: 2,521
just pay a shop to do a smoke test and see were the bad line is and fix it.
straty1987 is offline   Reply With Quote Quick reply to this message

Quick Reply

Register Now

In order to be able to post messages on the JeepForum.com forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.
Confirm Password:
Email Address
Please enter a valid e-mail address for yourself.

Email Address:


Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.

Thread Tools

Suggested Threads

Jeep, Wrangler, Cherokee, Grand Cherokee, and other models are copyrighted and trademarked to Jeep/Chrysler Corporation. JeepForum.com is not in any way associated with Jeep or the Chrysler Corp.