As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CRUISE FLT, BLUE ENGINE VALVE CLOSED LIGHT ILLUMINATED . NO OTHER LIGHTS OR ABNORMAL INDICATIONS. LIGHT EXTINGUISHED WHEN ALTITUDE WITH INCREASE POWER CHANGE. ACFT GROUNDED. AS A PRECAUTION REPLACED THE FUEL SYS MODULE, OPS CHECKED GOOD IAW MM 28-22-43.