As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT FAILED TO PRESSURIZE ON CLIMBOUT AND HAD SERVICE DOOR CAUTION LIGHT, THE CREW DECLARED AN EMERGENCY AND RETURNED TO FIELD. THE / MASKS DID NOT DROP, BUT EQUIPMENT DID ROLL. THE AIRCRAFT TAXIED INTO THE GATE UNDER ITS OWN POWER. MX INSPECTED A/C AND FOUND MDC FLAGGING PX38 SENSOR FAR. INSPECTED SERVICE DOOR AND SEAL. FOUND NO DEFECTS. PRESSURE CHECK GOOD.