As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CLIMBOUT FROM BWI, LANDING GEAR DOOR OPEN LIGHT REMAINED ON AFTER GEAR WAS RETRACTED. RECYCLED GEAR AND NORMAL INDICATION WAS ACHIEVED. FLIGHT CONTINUED TO DESTINATION AND LANDED WITHOUT INCIDENT. FOUND LEFT MAIN GEAR DOOR SWITCH CANNON PLUG NOT SEATED PROPERLY. RESEATED CANNON PLUG. OPERATIONAL CHECK OK, AIRCRAFT RETURNED TO SERVICE.