https://volvoforums.com/forum/2001-2013-model-year-xc70-53/p0026-p0027-clatter-idle-94835/ this might help I saw this posting. i have not had any oil usage issue, so I wasn't sure this was the same deal. Having said that I was wondering if you could clarify a couple things in this posting: Just wan...

A couple days ago my 2006 XC90 2.5T started making a horrible clacking or loud tapping noise when at an idle. I checked the oil, and added some because it was at the lower end of the stick, but the clacking continued. One day later both the p0026 & p0027 codes appeared at the same time. Here is ...