Just wanted to share that indeed my P0445 trouble code was the Purge Control Valve. After replacing it the check engine light did not go off after 4 days of driving but then I disconnected the battery and the check engine light has been off for 5 days now. In my case, I bought part 28910-22040 (also known as 2891022040) from
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asit was just shy of $30 and a genuine OEM part. Brainlessly easy toreplace by myself too. Got me some new wiper arms too. So nice to havethe blade actually stick to the windshield again. Ahhh.....