TSB: REVISION NOTICE November 13, 2019 Rev2: ? The Warranty Information section has been updated. July 02, 2019 Rev1: ? The Applicable Warranty section has been updated. Any previous printed versions of this bulletin should be discarded. Some 2004 ? 2009 model year Prius vehicles may exhibit a MIL ON condition with Diagnostic Trouble Code (DTC) P0A80 or P0A7F stored due to dust or debris buildup in the HV battery cooling fan. Follow the Repair Procedure in this bulletin to address this condition.