Ho6 error code on Kenmore Elite HE4t washer

This washer started giving us an F06 error code intermittently at times a month or so ago.
We were able to select a different wash cycle that it would complete without this error code, but now it is coming on all the time and on most of the different types of washes.
I am thinking it might be a Motor Control Unit, but not sure.
Do you have any ideas?

Thanks