As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) LOW OIL PRESSURE/IFSD DURING CLIMB PASSING FL110, THE ENGINE LOW OIL PRESSURE WARNING SOUNDED. THE PILOT IMMEDIATELY REDUCED THE POWER TO IDLE, AND SHUT THE ENGINE DOWN BEFORE RETURNING TO THE POINT OF ORIGIN WHERE AN UNEVENTFUL SINGLE ENGINE LANDING WAS PERFORMED. POST FLIGHT INSPECTION FOUND A LOW OIL LEVEL BUT NO OTHER MAJOR ISSUES. TROUBLESHOOTING IS ON-GOING.