As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING ENGINE START NR 2 ENGINE FAILED TO LIGHT, RAN QRH. STARTED NORMALLY WITH IGNITER RIGHT. GROUNDED - YES. REMOVED AND REPLACED NR 2 ENGINE LEFT IGNITION EXCITER W/ NEW REF AMM 74-11-01. PERFORMED IGNITION SYSTEM AUDIBLE TEST AMM TASK 74-00-00-750-801-F00. TEST PASSED. A/C RELEASED FROM MEL 74-1C.