Anyone familar with this code? Shows 2c pressure switch fault. Owner repairable or shop item? Thanks for your reply

 

The P1734 is for the 2C clutch pressure switch inside the solenoid pack in the trans. This is most likely the pressure switch itself, requiring solenoid replacement. This can be done yourself. You should be able to drop the pan and remove the filter and it's right there.

If your trans is the 45RFE, here is a link that might help.

http://files.jeep.org.ua/jeep/manuals/45RFE.pdf