As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) NR 2 ENGINE OIL PRESSURE NORMAL, 62 PSI, UNTIL CLIMB THROUGH 12000 FT STARTED FLUCTUATING AND INCREASED TO A MAX OF 100 PSI WHEN RETURNED AND LANDED. MAINTENANCE DETERMINED IT TO BE A FAULTY OIL PRESSURE TRANSDUCER. REPLACED OIL PRESSURE TRANSDUCER, GROUND RUNS CARRIED OUT WITH NO FURTHER FAULTS. ACFT RETURNED TO SERVICE.