As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
BOTH LED WINDOWS ON THE PRESSURIZATION CONTROLLER WILL NOT ILLUMINATE. ACFT GROUNDED. PRESSURE CONTROL MODULES NR 1 & NR 2 LOGGED PRESSSURE CONTROL MODULE FAULT. REPLACED PRESSURIZATION CONTROL MODULE. OPS TEST NORMAL REF TASK 21-31-00-710-801.