As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON CLIMBOUT FROM BOS TO PHL RECEIVED NOSE DOOR WARNING MSG. A/C RETURNED TO BOS LANDED SAFELY. INSPECTED A/C, FOUND CHUNKS OF ICE ON NOSE GEAR DOORS AND ON NOSE LANDING GEAR. CLEANED OFF ICE, PERFORMED MULTIPLE GEAR SWINGS. NO FURTHER DEFECTS NOTED.