As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SHIP 5030 - ATB -AIR TURN BACK DUE TO LEFT ENGINE OIL FILTER CLOG MESSAGE. ENGINE OIL PRESSURE STILL IN GREEN AREA. CORRECTIVE ACTION: CHECKED OIL FILTER AND CHIP DETECTORS WITH NO FINDINGS. PERFORMED HIGH POWER RUN, NO FAULTS. WAITING FOR OIL FILTER DP SENSOR ON FLIGHT 705 ETA 6:25. HISTORY OF FAULT. PREVIOUSLY REPLACED EEC WITH NO HELP. REPLACED OIL FILTER DIFFERENTIAL (NBR 1) PRESSURE SENSOR PER A321 AMM 79-33 SECTION 5 SUBTASK 410-05A. (LP 7220770)