As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
#2 ENGINE FUEL FILTER BYPASS LIGHT ILLUMINATED AFTER LANDING. GROUNDED - YES. WHILE PERFORMING B737-900 FIM 73-05 TASK 801 FOUND FUEL FILTER DIFFERENTIAL PRESSURE SWITCH ELECTRICAL CONNECTOR LOOSE. RECONNECTED REF B737-900 AMM 73-34-01. PERFORMED IDLE-POWER LEAK TEST ON ENG #2 REF AMM 71-00-00, NO DEFECTS NOTED. GROUND VERIFICATION TEST PERFORMED & PASSED.