As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NR 2 OIL LOW PRESSURE LIGHT ILLUMINATED SEVERAL TIMES ON CLIMBOUT. OIL QUANTITY 3/4 OIL TEMPS AROUND 110 DEG AND OIL PSI BETWEEN 80-100 PSI LIGHT WAS OUT FOR LAST 10-15 MINUTES OF FLIGHT. AIR RETURN TO MSP. MAINTENANCE CND, FOR PRECAUTIONARY PURPOSES REPLACED NR 2 TRANSDUCER P/N 2-303-869-01, S/N OFF 1125997, S/N ON 888486. SWAPPED PCB 2QL1 AND 3QL1, RAN AC AT TAKEOFF POWER, OP CHECK GOOD.