As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS NOT GROUNDED: FLIGHT ATTENDANT PANEL HAS CHECK L3 DOOR SLIDE PRESSURE MESSAGE. MAINTENANCE REPLACED "B" DECODER ENCODER UNIT 300RH6 (DEU) AND ACCOMPLISHED A SATISFACTORY OPERATIONAL CHECK PER AMM 23-73-47 WHICH CLEARED THE MESSAGE.