As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ETOPS - ENGINE 2 FIRE LOOP B FAULT. CHECK WIRES FROM ENG 2 FDU PLUG B, J AND K SHORTING TO GROUND PER AWM 26-12-08. DISCONNECTED 41WD2 & 42WD2 FROM (4WD2) PYLON DETECTOR. CONTINUITY & INSULATION CHECK OF 4WD2 GOOD. FOUND 41WD2 & 42WD2 INTERMITTENT SHORTING TO GROUND. REMOVED & REPLACED HARNESS 41WD2 & 42WD2 PER AMM 26-12-63. ENG 2 FIRELOOP B OPS CHECK OK PER AMM 26-12-00