As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) ENGINE INDICATING POWERPLANT MESSAGE ON ED DURING TAKEOFF ROLL. T/O ABORTED AND RETURNED TO GATE FOR TECHNICAL INVESTIGATION. THE CENTRAL DIAGNOSTIC SYSTEM (CDS) WAS INTERROGATED AND REVEALED THE PRESENCE OF FAULT CODE 224 ON LT ENGINE (THE GBE SWITCH STAYS IN THE CLOSED POSITION). THE PITCH CONTROL UNIT (PCU) WAS THEN REPLACED IAW TASK 61-20-11 AND AN ENGINE TEST RUN PERFORMED, REF. AMM TASK 71-00-00-868-805.