As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
A/C N16546 FLIGHT 3153 FROM DC TO EWR LG AIR/GND FAIL EICAS MESSAGE UPON GEAR RETRACTION DEPARTING DCA AIRPORT. MAINTENANCE REMOVED AND REPLACED LT LANDING GEAR WOW PROX SWITCH NR 1 AND 2 IAW EMB-145 AMM 32-63-01. ALSO REMOVED AND REPLACED DOWN LOCK PROX SWITCH HARNESS W511 IAW EMB-145 AMM 32-00-03. PERFORMED GEAR SWINGS, OPERATIONAL CHECK GOOD IAW EMB-145 AMM 32-30-00. THE AIRCRAFT WAS APPROVED FOR RETURN TO SERVICE.