As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHEN STARTING PREFLIGHT, ENGINE 2 IGNITION LEFT CIRCUIT BREAKER POPPED. GROUNDED - YES. FOLLOWED C/B RESET PROCEDURE IN REF WITH B737-900 AMM 20-60-01. OPENED C/B PANEL TO INSPECT FOR ARCHING BURNS OR DEBRIS. NO ISSUES NOTED. CLOSED C/B ENGINE 2 IGNITION LEFT C/B STAYED IN PERFORMED ENGINE RUN WITH CREW ON ENGINE 2 IGNITION LEFT. IN REFERENCE WITH AMM 71-00-00, OPS CHECK GOOD. C/B REMAINED IN.