As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
#1 ENGINE HUNG START N2 16.3 - 16.4 3 ATTEMPTS @ 3 MIN OF MOTORING. GROUNDED - YES. COMPLIED WITH B737-9 IFIM G71-00-00-810-868. FOUND LATCHED FAULT "ONBOARD MAINTENANCE FUNCTION HAS NO INPUT FROM ENGINE 1 EEC. C/W IFIM TEST G71-00-00-810-836 RESET A FAULT.