As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) DURING CLIMB, UNABLE TO PRESSURIZE AIRCRAFT TO HIGH DIFFERENTIAL , 'CABIN PRESS' WARNING LIGHT ILLUMINATED. FLIGHT ATTENDANT REPORT LOUD WHISTLING FROM FORWARD EMERG EXIT DOOR. AIRCRAFT RETURNED TO ORIGINATING AIRPORT. MAINTENANCE INSPECTION FOUND FORWARD EMERGENCY EXIT DOOR INFLATABLE SEAL WORN. SEAL REPLACED. AIRCRAFT RETURNED TO SERVICE. (PART IS CONSIDERED AN EXPENDABLE AND TIMES ARE NOT TRACKED)