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Old 02-16-2010, 09:25 PM   #1
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Angry Check Engine Light 'trick' NOT WORKING

Ok, I know... I know, there are a million posts on here that talk about how to check for the engine codes on the Jeeps.... but it aint working, I have a 99' and im trying the ol' "on-off-on-off-on" everyone says, but nothing happens. I can do the 'hold the odo button and watch your dash go crazy' trick, but i cant get my CEL to flash its code, not even the code 55 is showing up. I need help guys, my Jeep is acting up and i need to know whats wrong. Thanks everyone.

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Old 02-16-2010, 10:01 PM   #2
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I've had codes that trip the check engine light, that wouldn't come up doing the self scan and had to physically hook a scan tool up to it. If your CEL is on and your not getting any P codes from the key trick, take it to a parts store that will scan and have them hook it up for you.

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Old 02-16-2010, 11:24 PM   #3
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when there is no code it should say done
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Old 02-17-2010, 12:01 AM   #4
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Yeah, my 98 wouldn't show a code. 2 mins at Auto Zone and I had the code.
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Old 02-17-2010, 12:05 AM   #5
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Depending on where you're at, I've got an OBD2 code reader.
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Old 02-17-2010, 12:06 AM   #6
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nm, just checked your profile, says Wasington.

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