As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
A/C REJECTED TAKE OFF DUE TO DAU 2A FAIL. MESSAGE SELF CLEARED WITHIN 10 SECONDS. ADVISED CREW TO CYCLE REVERSIONARY SG PUSHBUTTONS AND CYCLE IC-600 CIRCUIT BREAKERS. MESSAGE NEVER CAME BACK, MAINTENANCE CONTROL AND CREW DETERMINED MSG TO BE A TRANSITORY CONDITION.