As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 165 JFK-PDX AIR RETURN TO JFK - ON TAKEOFF AFTER GEAR RETRACTION AND BEFORE FLAP RETRACTION, CAUTION MESSAGE WITHOUT AURAL ECAM CHIME "ENGINE 2 BEARING 4 OIL SYS HI PRESS" CAUTION SELF CLEARED AFTER ABOUT 5 MIN RETURN TO JFK. ACCOMPLISHED TSM 79-33-00-810-804. REMOVED AND REPLACED NR 4 BEARING SCAVENGE VALVE PER AMM 79-23-51. REMOVED AND REPLACED NR 4 BEARING TRANSDUCER PER AMM 79-33-16.