What was found
(CAN) ABORTED TAKEOFF DURING TAKEOFF ROLL, THE PILOT RECEIVED A FUEL FILTER BYPASS INDICATION, PILOT DECIDED TO ABORT THE TAKEOFF AND THE WARNING DISAPPEARED UPON REDUCTION OF POWER. THE BYPASS WARNING REAPPEARED EVERY TIME THE POWER WAS INCREASED. TROUBLESHOOTING IS ON-GOING BUT PRELIM CHECK FOUND NOTHING. FURTHER TROUBLESHOOTING WILL CONTINUE AT BASE FOLLOWING A FERRY FLIGHT.