As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT#2220, LHR-JFK. (ETOPS) 'CLASS 2 FUEL MX MSG ( CLASS II MAINTENANCE MESSAGES DISPLAYED ON ECAM STATUS PAGE OF ECAM SYSTEM DISPLAY 1) FAULT(S) INDICATED BY FUEL); REMOVED AND REPLACED FLSCU #2 IAW AMM 28-46-34. OPS CHECK OK MX-4 UPDATED PLACARD REMOVED MDDR CLEARED