As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
APU DET INOP LIGHT AND APU BOTTLE DISCHARGE LIGHT ON OVHT FIRE TEST & NR 1 ENGINE FIRE HANDLE NOT ILLUMINATING, 'A' LOOP WORKING, 'B' LOOP INOP. GROUNDED - YES. WORKED ON ETOPS CRITICAL SYSTEM. REPLACED MW0325 HARNESS, REF B737-800 AMM 26-11-02, CLEARS MEL 26-2B.