As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
OIL PRESSURE IN THE NR 1 ENGINE BEGAN TO FLUCTUATE BETWEEN 71 AND 74 PSI. OIL PRESSURE STABILIZED AT 74 PSI. RAN QRH, PULLED BACK POWER AND OIL PRESSURE DID NOT DROP. SHUTDOWN ENGINE IAW QRH AND DECLARED AN EMERGENCY, DIVERTED AND LANDED. MAINTENANCE TROUBLESHOT USING FIM 79-00-00-810-804 FOR HIGH OIL PRESSURE AND FOUND ENGINE OIL PRESSURE AT 73 PSI. R & R THE NR 1 MAIN OIL PRESSURE SENSOR IAW AMM AND OPS CHECKED GOOD.