As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW REPORTED, LANDING GEAR AIR/GROUND FAILURE, GEAR WOULD NOT RETRACT. RETRACTED GEAR WITH DOWNLOCK RLS. MAINTENANCE REMOVED AND REPLACED THE NOSE GEAR LEG IAW EMB145 AMM 32-20-01. PERFORMED GEAR RETRACTION, OPS.CHECKED GOOD. NO LEAKS NOTED. AIRCRAFT RETURNED TO SERVICE.