That particular car has at least three solenoids in the transmission that controls shifting. When there is a problem with the transmission the check engine light comes on giving your an area to start diagnosis. The code will point you in the correct direction but is not a diagnosis in and of itself. The car needs to come to a certified shop like Toyo Automotive for a proper diagnosis. Also the gear shift has a solenoid that allows the car to shift out of park when the brake pedal is depressed. I'm at four solenoids.