I have a 99 with 5.4, 4R70W trans. i have the OD light flashing but have overdrive, it has a rough shift from 2-1, last summer had the same deal, replaced plastic clip for selnoids, and 1-2 shift spring, but doing the problem again. Any ideas?

 

get the codes read..

 

1/2 shift error

 

Actual fault code, please, not a description.