As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED. BRAKES SYSTEM 2 FAULT ON ECAM AFTER TAKEOFF. PERFORMED QRH RESET PROCEDURE AND RECEIVED BRAKES SYSTEM 1 FAULT ON ECAM. FLIGHT AIR INTERRUPTED AND RETURNED TO FIELD. REPLACED BRAKE/STEERING CONTROL UNIT WITH ROBBED UNIT, IAW AMM 32-42-34. OPERATIONS CHECK GOOD.