I know the overdrive flashing is saying it's overheating, but it starts flashing as soon as the truck is turned on. Also have no fluid coming to the cooler. Just put new torque converter in, pump looked fine, cleaned valve body, replaced the tcc, shift solenoid, EPC solenoid as well as the multiplex switch.

2003 F150, 4r70w 4x4, 5.4L

 

Got fluid flow, but the OD light still flashes. What other reasons would this flash. Also running a code (P0755- Shift solenoid B) but I just replaced the solenoid

 

For whatever reason, the computer is seeing an electrical issue in the SSB circuit. That could be anywhere from, and including the computer, to the shift solenoid and everything in between.

D

 

No. It means that the PCM has detected a problem somewhere in the transmission system and is setting codes. It's like the check engine light.