As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER FLIGHT 256, EWR - PUJ, WHILE ON THE GATE AT PUJ, NR 2 ELAC (ELEVATOR AILERON COMPUTER) FAULTED ON ECAM. SWAPPED NR 1 & 2 ELAC'S PER AMM 27-93-34. PERFORMED OPS CHECK FOR BOTH ELAC'S PER AMM 27-93-00-710-001 AND TESTED OK. DEFERRED NR 1 ELAC PER MEL 27-93-01-2. UPON RETURN TO EWR (THE NEXT FLIGHT), REPLACED NR 1 ELAC AND OPS CHECKED PER AMM 27-93-00-701-001 OK.