Your Jeep is equipped with an OBD-II compliant computer system. Most Autozones and other auto parts stores will scan for codes on OBD-II systems for free.
The codes you'll get from a scanner will be more helpful than codes from the dash code reader.
-Nick
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1988 Jeep Cherokee w/ 410,000+ miles. Now a
100% Electric Vehicle!
NO Gas, NO Emissions, NO Problem! --
http://www.DriveEV.com/
