Originally Posted by Sherpa
Not all fault codes can/will be displayed in the odometer. Sounds like you need to hook up to a proper code-reading computer.
I have read several conflicting things about that on a couple different websites. There doesnt seem to be a consensus about that. Although the majority of the available info points to jeeps pre-2000 not having all the obd2 codes available through the odometer read out.
However, the fact that my read out says no fault and the CEL is still on leads me to believe otherwise.
Can you tell me where you got your information?