As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING TAKEOFF CLIMB, THE CREW REPORTED RECEIVING A LANDING GEAR AIR/GND FAIL MESSAGE ON THE EICAS. MAINTENANCE REMOVED AND REPLACED THE CONNECTION ON THE LT MAIN LANDING GEAR AT THE FORWARD WOW SWITCH. OPS CHECK OF THE EXTENSION AND RETRACTION SYSTEM WAS GOOD FOLLOWING THE REPAIR.