"check ingine" lite comes right back on, but no code??? - JeepForum.com
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Unread 01-28-2006, 02:13 AM   #1
Q-01
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"check ingine" lite comes right back on, but no code???

Cleared codes (99 2.5), cleared light,, several starts later...I get "check engine" light, but no codes...????????

Whats up....cant keep "check engine" light out....????? But no codes....??

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Unread 02-01-2006, 06:57 AM   #2
airduds
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What are you using to check your codes?
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Unread 02-01-2006, 08:53 AM   #3
Muddeprived
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Quote:
Originally Posted by Q-01
Cleared codes (99 2.5), cleared light,, several starts later...I get "check engine" light, but no codes...????????

Whats up....cant keep "check engine" light out....????? But no codes....??
Take it to autozone for a free code pull. The key trick does not work on 98+ models. Just so you know.

Make sure your gas cap is on a few clicks.
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Unread 02-01-2006, 09:11 AM   #4
Wheelin98TJ
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Thats correct.

The key trick does not work, but you can still pull codes (copied directly from the FAQ):

So on TJs with the newer diagnostic system, to see the codes you put the key into the ignition, push and hold down the odometer reset button, turn the key to RUN, then release the odometer reset button. When you do this you are rewarded with dancing number displays, the firmware version number, any error codes, then a diagnostic test of all the dash indicators and gauges. The gauges will, one by one, go through a calibration--the needles moving and stopping at major increments so you can check their alignment with the dial markings.
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Unread 02-01-2006, 09:17 AM   #5
sdog30
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Ditto on Autozone. They have a code reader that they come out to your car and plug it in for FREE. They were able to tell me which O2 sensor I had to replace.
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