This hose is torn and I think it is the reason for Ford Focus's Bank 1 too lean error. I think it is a PCV hose but I need to be sure.
https://www.dropbox.com/s/zc7uew03qo...53.26.jpg?dl=0
https://www.dropbox.com/s/im8g4nm8kp...54.50.jpg?dl=0
https://www.dropbox.com/s/5sffc33t90...55.05.jpg?dl=0
Perhaps it is a radiator hose?