As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) THE CREW REPORTED THAT DURING CLIMB, AT 7000 FT, A PASSENGER DOOR CAUTION MESSAGE (NOT SPECIFIED) CAME ON. AT 11000 FT, THE PASSENGER DOOR WARNING MESSAGE CAME ON. THE MAINTENANCE INTERROGATED THE PSEU, FOUND S76 AND S27 AT FAULTY. THE SENSORS WERE CLEANED AND THEY PRESSURIZED THE A/C TO 2.5 PSI, AIRCRAFT RETURNED TO SERVICE.