As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) ON CLIMB, NR 1 ENGINE OIL PRESSURE INDICATED 66 PSI. NR 1 ENGINE SHUT DOWN AS A PRECAUTION. AIRCRAFT RETURNED WITHOUT INCIDENT. O-RING FOUND DAMAGED IN VALVE HOUSING. O-RING REPLACED, VALVE RE INSTALLED AND ADJUSTED IAW MM. 72-00. NO FURTHER INCIDENT DURING SUBSEQUENT FLIGHT.