Are councils considered infallible?

[DeusExMachina]

Are the canons produced at ecumenical councils (Nicaea, Florence, Vatican 2, etc.) considered infallible?

 

[Fr.Charles_Grondin]

Yes.

Code of Canon Law:

Can. 749 §2. The college of bishops also possesses infallibility in teaching when the bishops gathered together in an ecumenical council exercise the magisterium as teachers and judges of faith and morals who declare for the universal Church that a doctrine of faith or morals is to be held definitively…

Catechism of the Catholic Church:

**891 **. . . . The infallibility promised to the Church is also present in the body of bishops when, together with Peter’s successor, they exercise the supreme Magisterium," above all in an Ecumenical Council.