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Cool But Confused

This bulletin applies to 2008-2010 Honda Odyssey models. The MIL may be on, with DTC P0128 set (cooling system malfunctioning). The probable cause: The PGM-Fi software misinterprets sensor inputs as a cooling system malfunction, causing the DTC to be set.

Update the PGM-Fi software with the HDS, version 2.024.011 or later. If the HDS or MVCI is loaded with the latest software and it displays “no update needed” during the update, the software for this bulletin is already installed.

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