As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
UNABLE TO DEPRESSURIZE NR 2 EDP DURING ENG RUN. INDICATION OPERATION NORMAL. REPLACED CONNECTOR DV349 AT EDP, DUE TO PUSHED BACK PIN IAW WD 29-11-12 DV349 HAS 28VDC & GOOD GNDS, NEEDS RUN TO VERIFY FIX. ACCOMPLISHED ENG RUN & PUMP, OPERATIONS NORMAL.