As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ORD INFLIGHT T1462/18FEB - DURING CLIMB CREW REPORTED NUMBER TWO ENGINE LOW OIL PRESSURE INDICATION. OIL QUANTITY, PRESSURE AND TEMPERATURE INDICATIONS GRADUALLY WENT TO ZERO. RETURNED TO ORD AND LANDED WITHOUT INCIDENT. SINGLE ENGINE TIME APPROXIMATELY 10 MINUTES. REPLACED NUMBER TWO ENGINE AND ISOLATORS ON 19 FEB AT ORD DUE TO OIL PRESSURE AND QUANTITY OUT OF LIMITS. SYSTEM GROUND CHECKED NORMAL OPERATION.