tbrumm:
I hope i am not high jacking the thread am just sharing what i am going thru
I came across this great thread as i was searching for an answers to what the professional mechanic can't answer yet maybe he is stunt or simply don't have time to go over the work he did to cause this OD flashing symptom like yours did , YES that's true as i took my F350 which sat for years and after i started driving it had dry cracked front seal causing ATF leak by bell housing BUT I HAD NO Flashing OD what so ever .You would think Easy work right ( front seal , Check pump ,..etc ) .Yes i should done it my self but decided let the shop tear at it as i have no time or Transmission Jack. They done the seal job, u joint and complete Tranny flush with new filter and fresh oil
Ironically now we got the OD flashing and they did not pull the codes YET
. He told me that the Tranny shift completely 100% , TC is operating correctly , RPM's not jumping or any signs of worn TC . Shop told me he is going to look farther into it .
Reading your post i only can find one thing in common is Fluid flush is the reason the TCM triggered that code as you never mentioned you had that problem prior flushing neither did i , However they dropped the pan in mine vs your method . NOW i can't answer how my connectors look , solenoid pack, harness..etc since they are the one caused the issue and they have the truck .