As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CLIMBOUT FROM DTW, ALL THREE LANDING GEAR RED UNSAFE LIGHTS AND DOOR OPEN LIGHT REMAINED ON AFTER GEAR WAS RETRACTED. RECYCLED GEAR HANDLE AND ALL INDICATIONS WERE NORMAL. FLIGHT CONTINUED TO DESTINATION (CMH) AND LANDED WITHOUT INCIDENT. INSPECTED GEAR AND DOOR SWITCHES AND CONNECTORS. ALL CHECKED OK. DISCREPANCY COULD NOT BE DUPLICATED. AIRCRAFT RETURNED TO SERVICE.