As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON UPWIND DEPARTURE THE RIGHT ENGINE ECU FAILURE B CAME UP. PILOTS CAME BACK AND LANDED. RT ENGINE ECU FAILURE. CODE WAS 1E12, BOOST PRESSURE OPERATING RANGE. THIS INDICATES AN OVER BOOST SITUATION. THE PILOT DID NOT NOTICE ANYTHING ABNORMAL. THE WASTE GATE ACTUATOR DIAPHRAGM HAD FAILED. WASTE GATE ACTUATOR FAILED PREMATURELY BEFORE THE FAA AIRWORTHINESS DIRECTIVE COMPLIANCE TIME. FAILURE OF COMPONENT WAS 235.5 AND COMPLIANCE CHANGE TIME IS 250.0, TIME THAT WAS LEFT WAS 14.5 HRS LEFT.