As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SFO - INTERMITTENT RED INDICATION ON LEFT MLG AND NLG A-SYSTEM ONLY IN-FLIGHT WITH GEAR HANDLE SELECTED UP. MAINTENANCE SWAPPED SYSTEM 'A' AND SYSTEM 'B' CONNECTORS ON BOTH GEARS AND DEFERRED SYSTEM 'A'. AIRCRAFT RETURNED TO SERVICE. MAINTENANCE SUBSEQUENTLY CLEARED DEFERRAL BY REPLACING THE LANDING GEAR CONTROL BOX. (X)