As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RETURNED TO FIELD DUE TO FUEL FLOW INDICATION. DURING TROUBLESHOOTING FOUND DAMAGE TP WIRE INSULATION AT CONNECTOR D5004 FUEL FILTER DIFFERENTIAL PRESSURE SWITCH APPROXIMATELY A HALF INCH FROOM THE BACKSHELL. REPAIRED WIRING PER MM 71-51-00 PAGES 820/821.