As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON FLIGHT 4402 - CREW REPORTED ON TAKEOFF, RECEIVED A LG AIR/GND FAIL CAUTION MESSAGE. LANDING GEAR WOULD NOT RETRACT AND CREW ELECTED TO RETURN TO FIELD. AIRCRAFT REMOVED FROM SERVICE. FOUND CONNECTOR J0775 LOOSE. RETIGHTENED OPERATIONAL CHECK GOOD IAW AMM 32-30-00 AND AMM 32-34-00. AIRCRAFT RETURNED TO SERVICE. (A)