As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: EMERGENCY LIGHT BITE CHECK SHOWS EPSU EXT LOAD FWD L FAULT MESSAGE. MAINTENANCE FOUND CONNECTOR ON BOTTOM OF SLIDE ON L1 DOOR LOOSE, RECONNECTED AND A SATISFACTORY OPERATIONAL CHECK WAS ACCOMPLISHED WITH NO FAULTS NOTED.