Thanks! I'm attaching your tech. data sheet below, Page 7--->F7E5 – SHIFTER FAULT
Fault is displayed when the main control cannot determine position of shifter.
--->See TEST #3: Drive System, page 13.
--->Check harness connections from main control to motor and shifter.
--->Observe shifter operation.
--->See TEST #3a: Drive System–Shifter, page 13.
Here's the shift actuator for your model, if needed:
W10913953 Actuator
There is a video in the shift actuator part link that shows you how to replace it.
Here's another member that had this same error code, and the new shift actuator fixed it:
Whirlpool washer model# WTW4955HW1
www.applianceblog.com
Whirlpool owns Amana, and its the exact same shift actuator your model uses.