As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) THE LANDING GEAR WOULD NOT RETRACT WHEN SELECTED UP, AND THE TRANSIT LIGHT REMAINED ON. THE CREW COMPLETED AN UNEVENTFUL RETURNED TO THE DEPARTURE AERODROME. A NOSE LANDING GEAR WOW PROXIMITY SENSOR HARNESS WAS FOUND WITH A BROKEN WIRE, AND REPLACED WITH SATISFACTORY CHECKS CARRIED OUT.