As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NR 1 THRUST REVERSER DISAGREE MESSAGE ON TAKE OFF ROLL. CREW ABORTED TAKEOFF APPROX 40 KNOTS. FOUND NR 1 ENG T/R ICU VALVE FAILED ON CMC. R & R NR 1 ICU IAW AMM 78-33-01-00/400-801-A. LEAK CHECK GOOD. OPS CHECK GOOD. NO DEFECTS AT THIS TIME.