As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) DURING CLIMB, THE CREW NOTICED THE FUEL PRESSURE WARNING LIGHT FLICKER. THE BOOST PUMP WAS TURNED ON AND HAD NO EFFECT ON THE WARNING LIGHT. THE FLIGHT RETURNED TO THE AIRPORT FOR LANDING. MAINTENANCE FOUND A CHAFING/SHORTING WIRE IN THE FUEL PRESSURE WARNING CIRCUIT. THE WIRE WAS CHAFING ON THE AFT SIDE OF THE ENGINE FUEL HEATER.