Hard to say, there can be a number of things that can cause those codes, and you did not say as any other possibility has been investigated. How many miles are on the car and have you had the wiring harness thoroughly checked for broken/corroded wires for that system. Codes are not plug and play part change answers. Have you checked the solenoid pack for the trans?There are so many different things to check, if you are not capable to do them then I Would suggest letting the PRO's(not necessarily a dealer) do a good diagnosis.
Good luck in finding and repairing your concern.