As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CLIMB, CREW REPORTED LOUD NOISE AND VIBRATION FROM NOSE AREA AND UNABLE TO CYCLE NOSE GEAR IN AIR. AFTER AIR RETURN, MX MAINTENANCE DISCOVERED THE NOSE LANDING GEAR DOOR SOLENOID VALVE TO BE THE CAUSE. MX REMOVED AND REPLACED NLG DOOR SOLENOID VALVE WITH OPERATIONAL AND LEAK CHECKS GOOD. A/C WAS APPROVED FOR RETURN TO SERVICE.