As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CLIMB RECEIVED A NOSE "GEAR DISAGREE" AND "GEAR DOOR" EICAS MESSAGE ACCOMPANIED WITH AIRFRAME VIBRATION DURING LANDING GEAR RETRACTION. AIRCRAFT RETURNED TO DTW AND LANDED WITHOUT INCIDENT. REPLACED THE PSEU AND BOTH NOSE WHEEL ASSEMBLIES. OPERATIONAL CHECK GOOD.