As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RIGHT BLEED ISOLATION VALVE STATUS MESSAGE ON ARRIVAL. REPLACED RIGHT ISOLATION VALVE AS PER MM. VALVE OPERATES NORMALLY BUT SYNOPTIC DISPLAY FAILED TO SHOW GREEN BAR OR VALVE POSITION IN EITHER CLOSED OR OPEN POSITION. RELOADED ASCIPS SOFTWARE DID NOT FIX. STATUS BLEED 164022 ISOLATION VALVE STILL DISPLAYED. REPLACED ISOLATION VALVE. IAW MM 36-12-01. OP CHECKED NORMAL.