As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER PUSHBACK GOT STATUS MSG ELEV FEEL, IT CLEARED AFTER STARTING BOTH ENGINES READ NEEDED HYD PRESSURE IN MDM. AFTER A COUPLE OF MINUTES IT RETURNED AND WOULD NOT CLEAR. MSG FIRST APPEARED AFTER STARTING FIRST ENGINE. REMOVED AND INSTALLED ELEV FEEL COMPUTER PER AMM. LEAK TEST AND GROUND TEST OK.