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  1. Problems, Maintenance, and Repair (Gen 2)
    Hey everyone, I have a 2005 Sienna (3.3L, of course, FWD) that has been giving a P0300, as well as misfire codes for all clyinders (P0301, P0302, P0303, P0304, P0305, P0306). I replaced the front three plugs (cylinders 2, 4, 6), but as many of you know, the back ones proved to be too much...
  2. General Discussion (Gen 2)
    77,000 miles 2004 Sienna, I have been getting fault codes P0300, P0301, P0302, P0303, P0304, P0305, and P0306 every 70-80 miles. I always occures at highway speeds. I never feel anything, gas milage is stable. I have heard that this would be caused by the VVI oil control valve. Can anyone...
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