As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: THE AIRCRAFT DIVERTED TO ORD DUE TO THE FLIGHT CREW REPORTING A FUEL ACT TANK TRANSFER FAULT MESSAGE. MAINTENANCE REPLACED #1 ACT TANK FUEL INLET VALVE ACTUATOR 5QH1 AND ACCOMPLISHED A SATISFACTORY OPERATIONAL CHECK PER AMM 28-28-54.