As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) IN THE CLIMBOUT, THE CREW GOT A LANDING GEAR INOPERATIVE CAUTION MESSAGE. CREW DECIDED TO RETURN TO DEPARTURE. MAINTENANCE REPLACED PROXIMITY SENSING ELECTRONIC UNIT AND RELAYS K5, K6, K7 & K11. LANDING GEAR SWING CARRIED OUT NO FAULT FOUND.