As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLIGHT 2355. FLIGHT DECK DOOR DIFFICULT TO OPEN. REMOVED FROM SERVICE. CLEANED COCKPIT DOOR ELECTROMECHANICAL-LATCH. PERFORMED FLIGHT DECK DOOR OPERATIONAL CHECK. REF E175 MAINT MANUAL 52-51-03-820-801-A. OPS CHECK NORMAL. COULD NOT DUPLICATE. RETURNED TO SERVICE. NO PARTS REPLACED.