As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PILOT REPORTED THAT THE PRESSURIZATION WOULD NOT REACH 5.5 DIFFERENTIAL PRESSURE, BUT THE CABIN ALTITUDE WAS CORRECT FOR THE AIRCRAFT ALTITUDE. FOUND THE INSTRUMENT PRESSURE GAUGE CRACKED BEHIND THE BEZEL. THIS IS CONNECTED INTO THE ALTIMATIC STATIC SYSTEM AND IS INSIDE THE CABIN PRESSURE VESSEL AND WAS LEAKING CABIN AIR INTO THE SYSTEM.