As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
IMMEDIATELY FOLLOWING A NORMAL ENGINE START THE NR 2 FILTER BYPASS AMBER LIGHT ILLUMINATED AND ILLUMINATED. ALL ENGINE PARAMETERS NORMAL FOLLOWING ENGINE START. NR 2 ENGINE WAS SHUTDOWN NORMALLY 4 MINUTES AFTER IT WAS STARTED. ACFT GROUNDED. FOUND CONNECTOR DP0803 ON FUEL FILTER DIFF PRESSURE SWITCH OFF. CONNECTOR UNSERVICABLE. REPLACED J8 HARNESS. OPS CK GOOD. REF AMM 73-21-06.