As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ACFT EXPERIENCED A NR 2 ENGINE FADEC B FAULT AT ENGINE START AND RETURN TO GATE. THE ACFT WAS TAKEN OUT OF SERVICE AND TROUBLESHOT IAW TSM 73-20-81-810-893-A. THE FAULT WAS CONFIRMED AND HE NR 2 ENGINE FADEC WAS REPLACED IAW AMM 73-21-60. NO FURTHER ISSUES REPORTED ON SUBSEQUENT FLIGHTS.