As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CLIMB AT 29,000 FEET, THE CENTER ENGINE OIL PRESSURE INDICATION DECREASED TO 30 PSI. AIRCRAFT DIVERTED TO SLC AND LANDED WITHOUT FURTHER INCIDENT. MAINTENANCE REPLACED THE CENTER ENGINE OIL PRESSURE RELIEF VALVE. ENGINE OPERATIONAL CHECK OK.