Transmission pressure sensor switch keeps going bad
 

I have an '06 H3 with 70k miles on it. About 3 months ago, I started having transmission problems (rpm's are jumpy and check engine light came on). Took it to the shop, came up with diagnostic code P1810. They replaced transmission pressure sensor switch, wire harness, and shift lock solenoid. The day I got it back from the shop the check engine light came back on. Took it back to the shop, they took it apart and found that the brand new pressure sensor switch was bad. So today they replaced it again, and the light came back on after driving about 5 miles. If anyone has had this problem or knows anything about it, I would appreciate any help. Thanks!