My daughter has a 2010 Mazda 3 hatchback, 2.5 litre four cylinder with the automatic transaxle. Started coding PO753 indicating a faulty shift solenoid A . Transmission fluid is fine as far as quality and level. We cycled power to the car and the "A/T Light" didn't come back on upon start up. We went to a local Autozone to get the car checked for stored codes and found that the PO753 is a permanently stored code. Driving back home the light came back on as well as the check engine light. Any advice as to what I should do next? Thanks!