As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LANDED AT 0945 WHEN THE 1 M/ECU 2 LIGHT ILLUMINATED IN FLIGHT. MX CAME OUT TO THE ACFT & CLEARED THE FAULT WITH COMPUTER. TOOK OFF AT 1025 AND 5 MINUTES INTO THE FLIGHT THE M/ECU 2 LIGHT ILLUMINATED & THEN IT ILLUMINATED WITH THE 1 M/ECU 2. TURNED AROUND, BACK TO DEPARTURE AND NOTIFIED MX AND SHUTDOWN.