As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PER T/C 78273000 IN W/O 1970032, MSG NBR 73-30312 "THE START SWITCH SIGNAL AND ARINC BUS DATA DISAGREE FOR ENGINE 2 DUAL CHANNEL FAULT. ONFLIGHT LEG #2. GROUNDED - YES. PER B737-900 FIM 73-00 TASK 813 ENG #2 STORED FAULT INTERROGATED. NO FAULT NOTED-EEC TEST ACCOMPLISHED-IN GROUND - GRD-IN CONT-IN FLT NO MAINTENANCE MSG SHOWN ON THE FMCS CDU NO ACTIVE FAULT OBSERVED DEFECT CLEARED.