As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
#2 ARCDU FAIL MESSAGE. DIVERTED. REMOVED FROM SERVICE. FOUND HIGH RESISTANCE GREATER THAN 25 OHMS AT GROUND STUD 238-GS2 CLEANED GRD STUD RESISTANCE IS NOW LESS THAN .1 OHMS REF TC 6238101 FOR OPS CK A/C REMAINS CAT 3 PLACARD REMAINS CAT 3. AIRCRAFT RETURNED TO SERVICE.