As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FOUND FUEL SELECTOR WARNING CIRCUIT BREAKER TRIPPED AND FUEL SELECT OFF ENUNCIATOR LIGHT ILLUMINATED AND REMAINED ON. CAPTAIN ELECTED TO EXECUTE AN AIR TURNBACK AND DECLARED AN EMERGENCY. ACFT LANDED AND TAXIED TO RAMP WITHOUT INCIDENT. FOUND WD41 WIRE BETWEEN FUEL SELECTOR WARNING HORN AND CIRCUIT BREAKER CHAFED THROUGH THE SHIELDING, GROUNDING THE CIRCUIT TO THE AIRFRAME. REPAIRED DAMAGED WIRE AND RESECURED TO PREVENT FUTURE CHAFING.