I have a 2003 f250 with the 4r100 transmission. It's in limp mode with codes po1747 and po755. The od Lite is flashing. Will replacing the solenoid pack solve this?

 

PO1747 is for a short being detected in the transmission pressure control solenoid circuit. It could be in the pressure control solenoid, the ribbon cable inside the transmission, or even the external wiring to the transmission. Time to get out the ohmmeter and determine exactly what's shorted.

PO755 is for the 2-3 shift solenoid. Put the two faults together and it's looking like a wiring problem is more likely.