As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) DURING CLIMB, A LOW OIL PRESSURE WARNING OCCURRED. THE PILOT ELECTED TO SHUT THE ENGINE DOWN AND RETURN TO THE DEPARTURE AIRPORT WHERE AN UNEVENTFUL SINGLE ENGINE LANDING WAS ACCOMPLISHED. POST FLIGHT INSPECTION FOUND AN OIL FILTER BYPASS. THE ENGINE WILL BE REMOVED AND FORWARDED FOR REPAIRS.