Also this one -> NOTE:887522.1 - Grid Infrastructure Single Client Access Name (SCAN) Explained
In order to investigate this issue , we need all the related logs and traces.
We need to review TFA and/or RDA diags to get the whole picture..
Anyways, your issue is strange.. It seems to be caused by a structural misconfiguration.
As a quick check -> What is written in /var/log/messages of node 1?
Anything you can find in -> CRS_HOME/log directory?