As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CABIN ALTITUDE WARNING FOR AUTO PRESSURE CONTROLLLER FAILED. COULD NOT PERFORM THE FUNCTIONALTEST IN AUTO MODE TO CHECK FOR FAILURE CODE TO DISPLAY ON DIGITAL CONROLLER IAW FIM 21-31-00-801-A. PERFORMED OPS CHECK OF AUTO AND MANUAL MODES OF PRESSURIZATION CONTROL SYSTEM IAW AMM 21-31-00. OPS CHECKED GOOD.