As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CMH - DIVERSION - FLT 683 - DURING FLIGHT, DEPARTED FROM PHX EN ROUTE TO EWR, APU AUTO SHUTDOWN. THE NR 2 GENERATOR WAS ON MEL. CREW DIVERTED TO CMH AND LANDED WITHOUT FURTHER INCIDENT. MAINTENANCE SERVICED THE APU WITH THREE QUARTS OF OIL. OPERATIONAL CHECKS WERE GOOD.