As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING PRE-FLIGHT, FOUND PRESSURIZATION "AUTO FAIL" AND "ALTN" LIGHTS ILLUMINATED. ACFT GROUNDED. PERFORMED DIGITAL CABIN PRESSURE CONTROLLER BITE PROCEDURE ON NR 1 AND NR 2 CONTROLLERS. OPS CHECKED GOOD, NO FAULT NOTED. REF FIM TASK 21-31, TASK 801.