Kudos to Rodney and Christian at Bag Boy/Dynamic Brands.Loaned my Volt to a friend who wanted to try it out. He got a E01 error on the console. Verified error and contacted Rodney, he knew what it was, referred me to Christian in customer service for the replacement controller (replaced under warranty). Just got it and installed it. Works fine. Total elapsed time : 8 days ( I live in Hawaii ). Remarkable ...