As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DESCENDING THROUGH 12000 FT, AUTO FAIL AND ALTN LIGHTS ILLUMINATED ON PRESSURIZATION PANEL. FOLLOWED QRH PROCEDURE, AUTO FAIL LIGHT EXTINGUISHED. PRESSURIZATION REMAINED NORMAL ENTIRE TIME. ACFT GROUNDED. PERFORMED FIM 21-31, TASK 827. BITE CHECK PERFORMED ON BOTH CABIN PRESSURE CONTROLLERS. BOTH CONTROLLERS PASSED WITH NO FAULTS NOTED. OK FOR CONTINUED SERVICE.