Product review (5 stars): It was an expensive part, but it fixed the problem
It was an expensive part, but it fixed the problem, and was easy to do myself.  When my old motor went out, it blew the fusible link (check this first if your motor dies, especially if you are unable to see the diagnostic led on the right side of the motor.  The link is in the wiring harness wrapped up in tape, so not easy to spot).  After replacing the fuse/link my blinking LED light on the motor came on and did not show any error codes, but the motor still would not turn in regular mode or in troubleshooting mode.  I bit the bullet and replaced the motor, and it turns out that fixed the problem.