P0768 SUBARU - GEARS WILL NOT CHANGE FROM 1ST TO 2nd

Question

my subaru forester 2.0lt auto/sportshift gear box will not change from 1st to 2nd gear its goes into revers ,park but will not shift from 1ST GEAR,THE ECO LIGHT IS FLASHING,WHEN I DID A CEL SCAN I GOT A CODE - P0768 SHIFT SOLENOID D ELETRICAL I WOULD LIKE TO KNOW WHAT MUST I DO CUZ WHEN I TESTED THE SOLENOIDS I FOUND THAT SHIFT SOLENOID 1 IS NOT WORKING ??? PLZ HELP