As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS NOT GROUNDED: RIGHT ENGINE FUEL FILTER BYPASS ANNUNCIATOR ILLUMINATED SHORTLY AFTER TAKEOFF. COMPLETED QRH PROCEDURE AND ENGINE INDICATIONS WERE NORMAL. CONTINUED TO DESTINATION. EVENTUALLY IT EXTINGUISHED. MAINTENANCE CLEANED CONNECTOR TO DIFFERENTIAL PRESSURE SWITCH. ACCOMPLISHED SATISFACTORY OPERATIONAL AND LEAK CHECKS.