If the check engine light stays on you need to read the code(s) set in the ECM in order to begin to make repairs and make the light go away. Many of the larger chain car parts stores will check the code(s) set for nothing in hopes of selling you parts to correct the problem. It could be as simple as a loose or bad gas cap.
No.
Take a look at the gauges. At least one of them is out of it's normal parameter.
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.
The check gauges light comes on when one of the gauges is out of its safe range. It could be the alternator over or under charging, oil pressure low, or the engine overheating.The check gauges light comes on when one of the gauges is out of its safe range. It could be the alternator over or under charging, oil pressure low, or the engine overheating.
When the check gauges light comes on it is telling you to check the gauges because at least one of the gauges is out of normal range. It could be low oil pressure, engine over heating or low voltage.
My older Blazer has a 'check engine' light and also a 'check gauges' light. When the 'check gauges' light is on, check your other gauges like the temp and volt gauges. One of them may be showing something different than normal.
The check gauges light comes one when one of the gauges is not in the safe range. It could be an engine overheat, low oil pressure, or the alternator over/under charging.
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.
The check gauges light means that one of the gauges is out of the safe range.
It means that one of the gauges on not in the safe area, ie overheat, not charging, no oil pressure.....
A 2002 Jeep Wrangler does not have a reset switch.