Welcome! My name is XXXXX XXXXX I will do my best to assist you with this problem.
im sorry your having this problem
are you looking to fix this yourself ?or looking for what the shop would more than likely find wrong with it ?
Ok Dodge with the code P1748 more than likely the problem is the 2/4 brake solenoid which is in the valve body would need to be replaced
if all the wiring to the transmission is good and the wiring under the pan installing new 2/4 brake solenoid and 2/4 timing solenoids should correct this problem you are having
unless you drop the pan and there is metal or excessive clutch material aluminum or brass seen in the bottom of the pan if there are any signs of the this the solenoids caused deep internal damage to the transmission and rebuilding it or installing a used or rebuilt transmission will need to be done
# XXXXX and # XXXXX are the 2 solenoids on the valve body