As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING LANDING, THE PRESSURIZATION "AUTO" DRIVES THE OUTFLOW TO FULL CLOSED DURING, AFTER TOUCHDOWN. IT CONTINUES TO TRY TO PRESSURIZE THE AIRCRAFT ON THE GROUND THE SYSTEM WORKS NORMALLY IN ALTERNATE MODE. ACFT GROUNDED. COMPLIED WITH PRESSURE SYSTEM GROUND TEST IAW AMM TASK 21-31-00-700-802, TEST PASSED. OUTFLOW VALVE NO LONGER DRIVES CLOSE IN AUTO MODE.