Check Engine Light- Code PO442 - JeepForum.com
Search  
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 Liberty Forums > KJ Liberty Forum > Check Engine Light- Code PO442

Want to be able to SEE? DOT Approved Headlights for under Coil Spring Options from Ruffstuff!Flush Mount LED Bumper Lights, CREE

Reply
Unread 01-11-2011, 06:32 PM   #1
Steven73
Registered User
 
Join Date: Feb 2003
Posts: 1,011
Check Engine Light- Code PO442

2003 Liberty 3.7L.....check engine light went on this morning, and stayed on while vehicle was running. Jeep runs fine. I manually retrieved the code PO442. After I got the code, I disconnected the battery, and the check engine light went out. I drove it around some, and as of yet, it has not come back on. Would appreciate comments, suggestions, and if possible, the meaning of PO442. Thanks in advance.

Steven73 is offline   Reply With Quote Quick reply to this message
Unread 01-12-2011, 01:46 PM   #2
Steven73
Registered User
 
Join Date: Feb 2003
Posts: 1,011
problem solved at least for now

I took the gas cap off, and made sure to seat it real firmly. Then i disconnected the negative cable of the battery for about a minute, reconnected it, started the engine, and the check engine light went out. After driving for about 30 miles, it's still out, so I'm hoping I solved my own problem.
Steven73 is offline   Reply With Quote Quick reply to this message
Unread 01-13-2011, 10:23 AM   #3
jp7794
Registered User
2006 KJ Liberty 
 
Join Date: Jul 2008
Location: MO
Posts: 319
More info here.
jp7794 is offline   Reply With Quote Quick reply to this message
Unread 01-13-2011, 11:42 AM   #4
Steven73
Registered User
 
Join Date: Feb 2003
Posts: 1,011
light back on

Quote:
Originally Posted by jp7794 View Post
More info here.
the check engine light came back on this morning, so i figure I either have to replace the gas cap, or there's a leak somewhere. I wouldn't even know where to begin to look for any leak.
Steven73 is offline   Reply With Quote Quick reply to this message
Reply

Quick Reply
Message:
Options

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:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid e-mail address for yourself.
Note: All free e-mails have been banned due to mis-use. (Yahoo, Gmail, Hotmail, etc.)
Don't have a non-free e-mail address? Click here for a solution: Manual Account Creation
Email Address:

Log-in

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.