In the last four months, I have been getting intermittent error code P0011 on my 2008 prius. I notice that it comes usually when I am going up/down a major hill or going really fast. Took it to dealer once and they reset it and it would come back after couple months. Any ideas what might be going on?
Found this for P0011 for second gen prius. Powered by Google Docs Checking the oil control valve filter for the VVT system is part of above check.