As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AMBER (ROLL SYSTEM CONTROL FAULT) APPEARED SEVERAL TIMES ON DESCENT, WITH AUTOPILOT ON AND OFF. TESTED SEVERAL TIMES WITHOUT DUPLICATING THE DISCREPANCY. VIEWED MAINTENANCE DIAGNOSTICS AND FOUND FIVE OCCURENCES OF THE "ROLL SYSTEM CONTROL FAULT" DURING ONE LEG OF FLIGHT. NONE OF THESE MESSAGES CORRELATED TO A HARDWARE FAILURE. RETURNED AIRCRAFT TO AN AIRWORTHY CONDITION.