It means that one of the gauges on not in the safe area, ie overheat, not charging, no oil pressure.....
A person can rest the check engine light on a Jeep Wrangler by disconnecting the battery. This will also rest other warning lights on the dash.
A 2002 Jeep Wrangler does not have a reset switch.
If a 1999 Jeep Wrangler dash gauge stops working, check the fuse. The fuse may have blown out and will need replaced.
Grounding was an issue in many Jeep Wranglers, check the ground connections behind the gauge clusters first.
Check engine light would appear.
I own a 99 Jeep wrangler. the only thing I can think of is the fuel pump or filter. Which is located in the tank find a gauge to check the fuel pressure on the fuel rail
Then fix it
The check engine light is not controlled by a relay, the bulb is grounded directly by the engine computer.
The engine light is on when the engine computer has detected a malfunction and set a trouble code.
disconect pos battery cable for a few minutes
That is the check engine light. Have it checked for codes and diagnosed by a trained mechanic.
really crappy light switch is my guess, but you can check the gauge fuse on the drivers side kick panel. The dimmer for the dash lights is pitiful, they may be bad there.