As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON TAKEOFF ROLL, AMBER LIFT DUMPER FAULT ANNUNCIATED ON MFDU. RETURNED TO GATE. ASSIGNED LIFT DUMPER FAULT TO DMI NR 08029 PER MEL 27-63-1-1. FOUND NR 4 WHEEL SPEED TRANSDUCER FAILED. REMOVED AND REPLACED IAW AMM 32-45-02 OPS CHECK GOOD IAW AMM 27-64-00