As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
#2 ENGINE B LOOP WILL NOT TEST. GROUNDED - YES. COULD NOT DUPLICATE FAULT. ACCOMPLISHED B737-800 FIM 26-10 TASK 805, INSPECTED ALL WIRE ENDS IN FAN AND CORE. SHOT CONTINUITY THRU MW0326 WHILE SHAKING IT DOWN, CONTINUITY CHECK WAS GOOD. PER TECH SERVICES INPUT, REMOVED AND REPLACED LOWER ENGINE FAN LOOP (M1758) IAW B737-800 AMM 26-11-01/401. GROUND VERIFICATION CHECK SUCCESSFUL. #2 FIRE HANDLE LIGHT ILLUMINATES DURING TEST.