As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER TAKEOFF THE CREW SELECTED THE LANDING GEAR TO THE UP POSITION WITH THREE GREEN UP AND LOCKED INDICATIONS. THE CREW NOTICED AN UNUSUAL AMOUNT OF WIND NOISE AFTER GEAR RETRACTION WITH NO EICAS MESSAGE. THE NOSE LANDING GEAR DOORS WERE CONFIRMED OPEN BY IAD TOWER. THE APPROPRIATE CHECKLISTS WERE FOLLOWED AND THE AIRCRAFT RETURNED TO IAD AND LANDED WITHOUT INCIDENT. MAINTENANCE REPLACED THE NOSE LANDING GEAR DOOR SOLENOID VALVE IAW EMB 145 AMM 32-31-02. OPS CHECK AND LEAK CHECK GOOD.