Okay man, I'm about to give you some really crappy news. I got the exact same code, and my grandpa has been a transmission mechanic for 50 years. If your torque converter locks up, you're not driving anywhere. He told me all you can do is drive it till it dies and replace it. He also told me that basically I could buy all the electronics for the transmission, like solenoids and sensors, and they cost about $500 to replace. After doing all of those, there is no guarantee something else won't go bad. I found a transmission with 69k for $150. If I were you, I'd just go get a low mileage or rebuilt transmission.
2002 Jeep Grand Cherokee 2WD 4.7L H.O. SOHC