How to fix the "Shift solenoid B electrical" problem ? on 2003 Toyota Sienna

_ diagnostic code PO758
_ the transmision shifting is not smooth.

Asked by for the 2003 Toyota Sienna
get a free diag and est from aamco then shop prices.
Could you let me know approximately how the repair and the price is for that problem.
Tai Do
depends on if its the solenoid or the circuit. would not even guess at this time