As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
#2 FUEL FILTER BYPASS LIGHT AFTER LANDING. EXTINGUISHED ON ENGINE SHUTDOWN. GROUNDED - YES. C/W B737-900 FIM 73-05 TASK 801, FOUND FAULT 73-31072. FOUND CONNECTOR OFF FUEL FILTER DIFFERENTIAL PRESSURE SWITCH. SECURED CONNECTOR REF FIM 73-05 TASK 801 AND C/W REPAIR CONFIRMATION. FUEL FILTER BYPASS LIGHT DID NOT COME "ON" DURING TEST. PER FIM "PROBLEM CORRECTED". SUCCESSFUL GROUND VERIFICATION. OPS GOOD.