A340H Auto Trans will not shift past 2nd gear

02 Black

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The trans will shift from 1st into Reverse and 1st into 2nd but nothing higher.

It isnt throwing what appears to be any codes but the O/D OFF light is continuously flashing when the 2 diagnostic points are jumped.

I pulled all 3 solenoids and tested them with 12v and they seem to work, could a bad speed sensor be causing this?
 
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The trans will shift from 1st into Reverse and 1st into 2nd but nothing higher.

It isnt throwing what appears to be any codes but the O/D OFF light is continuously flashing when the 2 diagnostic points are jumped.

I pulled all 3 solenoids and tested them with 12v and they seem to work, could a bad speed sensor be causing this?

Speedo or TPS maybe.
 

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