2nd gen runner o/d off light

[milavon23]

Hey guys does anyone know it what it means when the o/d off light is flashing?.. It's never on so I guess I normally have my truck in overdrive cuz it's drives better, but just yesterday it started flashing is never done this before any help?

 

[v_man]

Check for codes by jumping your diagnostic plug , that's a start.

Toyota Tech - Diagnostic Trouble Codes

I bet it's a simple solenoid issue , easy fix...