Yikes, that sounds expensive for a Chrysler. Unfortunately the CEL only hints at the problem not always the exact reason. I bought an 01 Audi that the seller worked on and in the process hacked in new coils since the ECU was throwing random misfire codes. After i bought it and constantly cleared the codes, it finally came up with a code stating the ECU wasnt getting enough voltage. I replaced the ECU power relay (35$) and got rid of a lot of codes that made no sense.
a Month or so later, the torque converter went kaput. Sold it for mot much more than scrap value and now has a happy home, not in the junkyard.