As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
#1 ENG OVERHEAT TEST FAILED. GROUNDED - YES. REF B737-800 FIM 26-10 TASK 801 FOUND ENG 1 UPPER FAN DETECTOR FAULT. REF FIM 26-10 TASK 805 FOUND TERMINAL AT M1760 ENGINE CORE RIGHT FIRE DETECTOR ASSEMBLY. REPLACED WIRE HARNESS MW0325 REF B737-800 WDM ASA D280A120 REV 95. FAULT CLEARED PERFORMED OVERHEAT TEST AND A CHAN FUNCTION RESTORED.