As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) FUEL CONTAMINATION WAS CAUSING ENGINE FUEL FILTER ANNUNCIATION NO ENGINE PARAMETERS AFFECTED. FIBER LIKE FUZZ FOUND IN FILTER ELEMENTS. NOTE: LINE MAINTENANCE CLEAN UP OF FUEL CELLS INTRODUCED THE CONTAMINATION CHANGES TO THE CLEAN-UP PROCEDURE HAS RECTIFIED THE FAULT.