As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AUTO FAIL LIGHT ILLUMINATED DURING CRUISE FLIGHT LEVEL 32,000. ALTN LIGHT ILLUMINATED SOON AFTER. AS PER THE QRH, ALTN SELECTED. NORMAL PRESSURIZATION AT ALL TIMES. GROUNDED - YES. ACCOMPLISHED DCPC BITE TEST PER FIM 21-31-TASK 801. NO EXISTING FAULTS. SYSTEM TEST OK. RETURNED MODULE SWITCH TO AUTO, ALTERNATE LIGHT EXTINGUISHED, RECALL CK GOOD.