• Replacing Toyota Prius HV battery

    This bulletin applies to select models of the Toyota Prius, Prius C, Prius V, Camry Hybrid, Highlander Hybrid, Avalon Hybrid, Mirari and RAV 4 Hybrid and Corolla Hybrid vehicles with DTCs P0A80/P1AC000 and/or P0A7F/P1A8000 stored due to dust or debris buildup in the HV battery cooling fan and/or HV cooling filter.
    Related To: 
    July 15, 2025
    Photo courtesy of Mitchell 1
    Example of Prius battery intake filter.
    Example of Prius battery intake filter.

    Some 2003-2020 Toyota Prius, Prius C, Prius V, 2007-2020 Camry hybrid, 2006-2019 Highlander Hybrid, 2013-2020 Avalon Hybrid, 2016-2020 Mirai and RAV 4 Hybrid, and 2020 Corolla Hybrid vehicles may exhibit a MIL on with DTCs P0A80/P1AC000 and/or P0A7F/P1A8000 stored due to dust or debris buildup in the HV battery cooling fan and/or HV cooling filter.

    When DTC P0A80/P1AC000 are stored, replace the HV battery and intake filter. And make sure the fam is clean. Do not attempt to clean the HV cooling fan while it is installed. Doing so may cause dust/debris to enter the battery case. Failure to secure the fan blades while cleaning the HV battery cooling fan assembly may result in electronic circuit failure due to overturning.

    About the Author

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    Mike Mavrigian

    Motor Age Editor

    Mike Mavrigian has written thousands of automotive technical magazine articles involving a variety of  specialties, from engine building to wheel alignment, and has authored more than a dozen books that crisscross the automotive spectrum. Mike operates Birchwood Automotive, an Ohio shop that builds custom engines and performs vintage vehicle restorations. The shop also features a professional photo studio to document projects and to create images for articles and books.

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