As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AUTO FAIL/ALTN ILLUMINATED INTERMITTENTLY DURING CLIMB, CRUISE FOR 5 TO 20 SECONDS AT A TIME WITH NO CHANGE IN THE CABIN PRESSUIZATION. ACFT GROUNDED. PERFORMED FIM 21-31, TASK 801 CABIN PRESSURE CONTROL BITE SELF TEST PASSED ON BOTH CONTROL'S NO EXISTING FAULTS IN FLT HISTORY NOTED. ACFT OK FOR SERVICE.