TSB: REVISION NOTICE June 17, 2019 Rev1: ? The Diagnostic Trouble Code (DTC) and has been updated. ? The Required Tools and Equipment section has been updated. Any previous printed versions of this bulletin should be discarded. Some 2017 model year Prius Prime vehicles may exhibit a MIL ON condition with Diagnostic Trouble Code (DTC) P0A1F94 (Battery Energy Control Module [BECM] Unexpected Operation) when the ignition switch is on and the vehicle is in ?Ready Off? status for at least 5 minutes. Follow the Repair Procedure in this bulletin to address this condition.
