As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AUTO FAIL LIGHT ILLUMINATED ON PRESURIZATION PANEL. COMPLETED CHECKLIST. PRESSURIZATION IN ALT. ACFT GROUNDED. PERFORMED FIM 21-31-TASK 827. BITE TEST OF NR 2 CONTROLLER SHOWS NO EXISTING FAULTS. PREVIOUS FLT LEG SHOWS FAULT, SELECTOR PANEL. PERFORMED SYS. TEST AND CLEAR. TESTS OK. NO FAULTS. NO HISTORY 60 DAYS. PERFORMED SUCCESSFUL GROUND VERIFICATION.