As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHEN WE ENGAGED THE AUTOPILOT, THE AIRCRAFT ROLLED SHARPLY TO THE RIGHT AND DISENGAGED. WE RE-STABILIZED THE AIRCRAFT AND ENGAGED THE AUTOPILOT A 2ND TIME. IT ROLLED SHARPLY TO THE RIGHT AGAIN. WE CONTACTED FODO AND ALL DECIDED TO RETURN TO SEA INSTEAD OF CONTINUING TO OGG. GROUNDED - YES. RRMOVED AND INSTALLED NEW FFC B. REF B737-800 AMM 22-11-33/401.