As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) AFTER TAKE OFF, CREW NOTICED DOOR WARNING WHICH BECAME REPETITIVE. AFTER LANDING, MAINTENANCE CHECKED THE AFFECTED DOOR SENSOR AND THE ASSOCIATED HARNESS AND ALSO DOOR MECHANISM. NO FAULT WAS FOUND. HOWEVER, UPON CLEANING THE DOOR SENSOR NO MORE FAULT WAS PRESENT IN THE FOLLOWING TWO FLIGHTS. (TC# 20190429019)