As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW REPORTED AFTER TAKEOFF AND IN CRUISE, ALL THREE GREEN GEAR DOWN LIGHTS ILLUMINATED WITH THE GEAR HANDLE IN THE UP OR OFF POSITION WITH LANDING GEAR MONITOR, AIR-GRD DISAGREE AND NOSE AIR-GRD DISAGREE STATUS MSG'S DISPLAYED ON EICAS. NO ABNORMAL VIBRATIONS NOTED. REPLACED PSEU, ALL CHECKS NOW OKAY.