As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ENROUTE TO ILN, NR 1 ENGINE OIL PRESSURE PEGGED TO THE HIGH SIDE. CREW SHUT DOWN ENGINE AS PRECAUTIONARY PROCEDURE. OIL PRESSURE STILL READ PEGGED HIGH. WITH ENGINE SHUT DOWN, OIL PRESSURE READ 100 PSI; SHUT DOWN FOR APPROXIMATELY 20 MINUTES. ALL OTHER INDICATIONS WERE NORMAL. REMOVED AND REPLACED THE NR 1 ENGINE OIL PRESSURE TRANSMITTER AND THE MAIN OIL SYSTEM FILTER. SYSTEM OPS CHECKED GOOD IAW DC 8 MM.