As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AUTO FAIL AND ALTN ILLUMINATED ON PRESSURIZATION CONTROL PANEL. ACFT GROUNDED. RESET ACFT POWER AND AUTOFAIL AND ALTN LIGHTS DID NOT ILLUMINATE IAW FIM 21-31 TASK 801 DCPC BITE NR 1 AND 2, NO EXISTING FAULTS. FAULT HISTORY NR 2 SHOWS SELECTOR PANEL LRU FAIL FOR FL 00 IAW FIM 21-31 TASK 803 INITIAL EVAL PARA E (3)(C) DCPC PERFORMING CORRECTLY.