As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RUDDER RATIO EICAS MSG APPEARED AFTER BLOCK OUT. CREW RETURNED TO THE GATE (BTB). MTC PERFORMED B767 FIM 27-09 FT 803 CLEARED FAULT BALLS ON RUDDER RATIO CHANGING MODULES. RAN BOTH ENGINES IAW B767AMM 71-00-00 MESSAGE DID NOT RETURN NO FURTHER ACTION REQUIRED OPS CK GOOD. A/C REMAINS ETOPS 180 AND RETURNED TO SERVICE.