Apr 21, 2018 · P0300. Asked by GuruWYVWD Apr 21, 2018 at 11:37 AM about the 2013 Subaru Outback 2.5i Limited. Question type: Maintenance & Repair. I have a 2013 Outback 2.5 limited that all of a. sudden the check engine light started flashing and. was shaking really bad.