This condition will query dbo.suspect_pages in the MSDB database, checking the number of fixed pages (event types 4, 5, and 7) per-database. This condition will fire if the number of fixed pages has increased since the last check.
If this check fires then it can mean that either DBCC CHECKDB has corrected or deallocated pages, or if Enterprise Edition is in use and the database is in either an Availability Group or Mirroring session where the pages could have been fixed via Automatic Page Repair.
