As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS NOT GROUNDED: 4R CABIN DOOR SLIDE PRESSURE LOW ON FLIGHT ATTENDANT PANEL ON CLIMB. MESSAGE WENT OUT AT CRUISE. MAINTENANCE REPLACED DECODER ENCODER UNIT -B 300 RIGHT (DEU) AND ACCOMPLISHED A SATISFACTORY OPERATIONAL CHECK.