As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER TAKEOFF THE CREW REPORTED THAT THE NOSE GEAR DOORS DID NOT RETRACT. THE AIRCRAFT CONTINUED TO IAH AND LANDED WITHOUT INCIDENT WHERE MAINTENANCE REPLACED NOSE LANDING GEAR DOOR CONTROL RELAY NUMBER K0642. OPERATIONAL CHECKS WERE PERFORMED AND THE DISCREPANCY WAS CLEARED.