As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) IMMEDIATELY AFTER TAKEOFF, THE ENGINE CONTROL FAULT L AND R CAS MESSAGE WAS DISPLAYED. THE PILOT DECIDED TO RETURN TO ORIGIN AIRPORT WITH UNEVENTFUL LANDING. THERE WERE ONLY TWO CREW MEMBERS ON BOARD. FIELD SERVICE REPRESENTATIVE IS TROUBLESHOOTING WITH THE OPERATOR.