Question

How do u rest the key with a circle around it on a 2001 Jeep Grand Cherokee 4.7L? How do I disarm the key with a circle symbol? I got the engine code P0864

Answer 1

Disconnecting the battery and allow both battery terminal to touch each other, this might help reset the system.

Answer 2

P0864 Jeep Code - TCM Communication Circuit Range/Performance
Read more: https://www.autocodes.com/p0864_jeep.html