As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ENROUTE, THE CREW EXPERIENCED FLUCTUATION OF THE ENGINE OIL PRESSURE. THE CREW DIVERTED FOR MAINTENANCE ACTION WITHOUT FURTHER INCIDENT. CORRECTLY INDEXED BACKSHELL AND TIGHTENED PGB OIL TRANSDUCER CONNECTOR 3 TURNS. PERFORMED OPS RUN CHECK. GOOD. NO FLUX NOTED.