As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) IN-FLIGHT RETURN DUE TO LOW OIL PRESSURE. NO MASTER WARNING ASSOCIATED - PSI FLUCTUATED FROM 2PSI TO 68PSI. OIL TEMP REMAINED STEADY AT 71DEG. MX REPLACED NR 2 ENGINE OIL PRESSURE SENSOR AND CONNECTOR CLEANED AND ACFT PUT BACK TO SERVICE.