As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LG AIR/GND FAIL CAUTION MESSAGE ON EICAS DURING CLIMB THROUGH 8,000FT. REMOVED AND REPLACED LT NR 1 & 2 WOW PROXIMITY SWITCHES OPTS CHECK GOOD IAW AMM 32-63-01 REFERENCE NRWC 664-MIA 03499 FOR WORK PERFORMED. PROXIMITY SENSOR P/N 80-057-01 S/N 45315 LHG2.