As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CLIMBOUT AFTER THE LANDING GEAR WAS RETRACTED, THREE LANDING GEAR DISAGREEMENT LIGHTS ILLUMINATED. CYCLED LANDING GEAR HANDLE AND ALL INDICATIONS WERE NORMAL. AIRCRAFT RETURNED TO MSP AND LANDED WITHOUT INCIDENT. MAINTENANCE REPLACED THE LEFT MAIN LANDING GEAR PROXIMITY SENSOR (23GA) AND THE NR 2 LANDING GEAR CONTROL INTERFACE UNIT. OPERATIONAL CHECK OK.