Went into limp mode P0973

[kompressor]

While towing I shifted out of overdrive and it wouldn't go back in. Stayed in third gear the rest of the trip. Trans temp was 224*.
Shows code P0973. Did the trans temp put it in limp mode? Still in limp mode today. Any suggestions? Thanks for any help.

 

[Bob4x4]

possible causes
TRANSMISSION CONTROL DTC PRESENT
(T16) TRANSMISSION CONTROL OUTPUT CIRCUIT OPEN
(T16) TRANSMISSION RELAY OUTPUT CIRCUIT SHORT TO GROUND
(T9) 3-4 SOLENOID CONTROL CIRCUIT SHORT TO GROUND
(T9) 3-4 SOLENOID CIRCUIT SHORT TO OTHER CIRCUITS
(T9) 3-4 SOLENOID CONTROL CIRCUIT OPEN
3-4 SHIFT SOLENOID
TOTALLY INTEGRATED POWER MODULE (TIPM)
ENGINE CONTROL MODULE