As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
#1 ENGINE CONTROLL LIGHT ILLUMINATED ON TAXI OUT. GROUNDED - YES. PERFORMED EEC BITE ON #1 ENG. FOUND FAULT 85-20581. ACCOMPLISHED B737-800 FIM 75-23 TASK 801. CLEANED HMU CONNECTORS- ACCOMPLISHED ACTUATORS TEST WITH NO ACTIVE FAULTS. RAN ENG 2 TIMES- VERIFIED NO EEC FAULTS. SEAMC MARCUS NOTIFIED.