As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
#2 ENGINE CONTROL LIGHT ILLUMINATED ON OVERHEAD PANEL. GROUNDED - YES. PERFORMED EEC BITE TEST, B737-900 FIM 73-00 TASK 801. ONE FAULT FOUND 73-31352 AIRPLANE VOLTAGE INPUT TO EEC. PERFORMED ENGINE RUN. INITIAL EVALUATION FAULT CLEAR. EEC SHOWS NO FAULT. AC OK FOR SERVICE.