As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) VIA ACARS FLIGHT NOTIFIED DISPATCH, THEY HAD A REJECTED TAKEOFF BETWEEN 70 - 80KTS DUE ENG N1 FLUCTUATIONS. THEY RETURNED TO GATE UNDER NORMAL POWER. RESOLUTION 2 ENG FUEL PUMP REPLACED IAW AMM 73-21-11 PB 401. NR 2 ENG HMU REPLACED IAW AMM 73-21-10 PB401. NR 2 ENG ECU REPLACED IAW AMM 73-21-60-PB40. PS3 LINE REPLACED ON NR 2 ENG IAW AMM 72-00-00-420-053A. ENG RUNS, HIGH POWER, CARRIED OUT WITH NILL FAULTS.