Pholm

After enigine oil change where i managed to verfill with 2.5 litres the gear box is not changing gear. Car did work kind of semi ok for 6 miles then went into "limp mode". Now it is stuck on drive way and will not engage any gear front or reverse. Can move shift through all positions without car moving. Enginge runs well. Tried to reset TCU by disconnecting battery. Any mechanic interlock thing that can be removed? Lost pressure? Would any reset procedure help?

Regards
Patrik