You would probably need a reader of some sorts such as a Scan Gauge or have to pay the Dealers a fortune.
The "key" trick of cycling the ignition key ON Off three times stopped working at the 2005 or 2006 KJ I believe.
No harm in giving it a try though!
Turn the ignition key to ON/OFF rapidly three times...do not start the Jeep. Leave it ON after the third ON/Off action.
The Odometer display shows the stored codes from oldest to newest.
On the Export KJs like my 2002 Export CRD I have to do this action 4 times...weird!