As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON PUSH BACK & START LEFT ENG IGNITOR 1 & 2 FAILED. CREW RETURNED TO THE GATE (BTB). T/S LEFT ENG IGNITION SYS IAW FIM 74-00 F/T 809 AND SSM 74-31-01, REMOVED AND REPLACED LEFT ENG #2 EXCITER BOX PER AMM 74-11-01. SYS CKS NORMAL PER AMM 74-00-00 AUDIBLE TEST VERIFIED #1 & #2 ING SYS BY ISOLATING EACH SYS. ENGINE RUN CKS NORMAL FOR #1 & #2 IGNITION. A/C REMAINS NO ETOPS. A/C RETURNED TO SERVICE.