As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CLT-LGA - EL - EN ROUTE TO LGA, LANDING GEAR LGCIU 1 FAULT ANNUNCIATED ON ECAM WITH NO GEAR INDICATION. RETURNED TO CLT AND DECLARED EMERGENCY LANDING. REMOVED AND REPLACED LEFT GEAR DOWN LOCK SENSOR HARNESS PER AMM 32-11-43. GEAR SWING PERFORMED PER AMM 07-11-00, OPERATIONAL CHECK NORMAL.