Question - Check engine light -
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 > Models > Jeep Wrangler Forums > TJ Wrangler Technical Forum > Question - Check engine light

Ruffstuff 10 year saleBDS 4-1/2" Suspension Lift Kit - Jeep Wrangler YJRough Country Lift Kits and Parts!

Unread 04-16-2007, 04:28 PM   #1
Registered User
Join Date: Apr 2007
Location: Long Beach, CA
Posts: 1
Question - Check engine light

I've recently bought an '02 4cyl Wrangler. After noticing my check engine light on I found that my gas cap was loose. Assuming this is the only issue, what is the cheapest way to get the light off? Will it shut itself off over time? Will unhooking the battery reset the computer? And more importantly, will fixing this on my own show up in a future diagnostic and void my Limited Drive Train Warranty? Any help is appreciated.....thanks.

odie6423 is offline   Reply With Quote Quick reply to this message
Unread 04-16-2007, 04:35 PM   #2
Registered User
Join Date: Jul 2005
Location: Western Maryland
Posts: 678
Disconnect the battery for about 5 minutes.
2001 Jeep Wrangler Sport 4.0L - Amber Fire Pearl Coat
1981 DeLorean DMC-12 VIN: 2953
Conundrum is offline   Reply With Quote Quick reply to this message
Unread 04-16-2007, 05:18 PM   #3
Registered User
2009 JK Wrangler 
Join Date: May 2006
Location: michigan
Posts: 165
drive for about 50 miles or so and the lite will shut off
but be sure gas cap is tightly sealed or it will not turn off
i had this happen to me twice once some one stole my gas cap and once i did not remove ice from around seal
2009 jk wrangler 2 dr 3.8 V6
with 285 70 r17 bf all terrians
westmichjeeper is offline   Reply With Quote Quick reply to this message
Unread 04-16-2007, 06:10 PM   #4
Registered User
1992 YJ Wrangler 
Join Date: Oct 2006
Location: , Massachusetts
Posts: 2,751
Take it to you local Autozone. They will scan the computer for FREE and tell
you what the problem(s) that caused the light to go on.
They can also turn the light off too.

Of course if there is still a problem the light will be back on in a while.
kloppk is offline   Reply With Quote Quick reply to this message

Quick Reply

Register Now

In order to be able to post messages on the 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. is not in any way associated with Jeep or the Chrysler Corp.