As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING PREFLIGHT "AUTO FAIL" AND "ALTN" ILLUMINATED ON PRESSURIZATION CONTROLLER. CYCLED AUTO PRESSURE CONTROL SW IN MAN AND DROVE OF VLV DOOR CLEARED FAIL LT, PERFORMED AUTO PRESS PNL CONTROLLER BITE NR 1 PASS NR 2 LOGGED CABIN PRESS CONT FAULT CLEARED ALL AND PERFORMED BITE TO CONFIRM INTERMITTENT FAULT PER AMM 21 31 00.