With a scan too or with a battery disconnect.
That is reset with a scan tool.
Any programming that would need done requires a scan tool.
With a scan tool
Unhooking a battery doesn't clear the codes on a 2003 Jeep. You need a scan tool.
With a scan tool, or try turning key on, off, on, off, on and counting the blinks of the check engine light. blink, blink, blink, pause, blink would be 31.
With a scan tool
There are pages and pages and items that can cause a check engine light. You need to have it checked for codes with a scan tool. After repair light can be shut off with scan tool.
You can't. This is an OBD2 compliant vehicle, and as such you will need a scan tool to access the codes.
With a scan tool after repair.With a scan tool after repair.
With a scan tool.
Either reset with a scan tool, or by unhooking the battery.