As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING TAXI PRIOR TO DEPARTURE, A CROSS BLEED FAIL WARNING MESSAGE ILLUMINATED. THE AIRCRAFT RETURNED TO THE GATE. MAINTENANCE INSPECTED AND REPLACED THE CROSS BLEED VALVE, IN ACCORDANCE WITH DORNIER MAINTENANCE MANUAL 36-11-10. OPERATIONAL CHECKS WERE COMPLETED.