As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER RECEIVING VENT SKIN VALVE FAULT DURING A PREVIOUS TAKEOFF ATTEMPT, RECEIVED THE SAME MESSAGE. TAKEOFF WAS AGAIN ABORTED. THE AIRCRAFT RETURNED TO THE GATE. MAINTENANCE PLACED THE EXTRACT VALVE ON MEL. THE AVIONICS EQUIPMENT VENTILATION COMPUTER WAS LATER REPLACED, OPERATIONAL CHECK OK.