As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING START OF NR 1 ENGINE WE OBSERVED NO LIGHT OFF OR EGT INCREASE. RAN QRH PROCEDURES FOR ABORTED START AND DURING SECOND START ATTEMPT HAD THE SAME RESULT, NO LIGHT OFF. GROUNDED - YES. RESOLVED ON W/O: 1845469 TASKCARD: N/R-00001. REMOVED AND REPLACED IGNITOR, PER B737-900 AMM 74-21-02, NO HELP. REMOVED AND REPLACED R-IGN EXCITOR, PER AMM 74-11-01. OPS TEST GOOD.