As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING MANEUVERS, THE FUEL PRESSURE GAUGE AND ENUNCIATOR SYSTEM WARN OF A LOW FUEL PRESSURE PROBLEM. ALL ENGINE INDICATIONS HOWEVER, SHOW THAT FUEL FLOW AND PRESSURE ARE NORMAL. THIS PROBLEM HAS BEEN EVIDENT IN OTHER AIRCRAFT IN THE FLEET OF 10 DA40 AIRCRAFT. THE MOST SUCCESSFUL METHOD OF ELIMINATING THIS INDICATION PROBLEM IS TO BLEED THE AIR THAT SEEMS TO HAVE ACCUMULATED IN THE TRANSDUCER LINES AND FITTINGS.