on node B, Please check LOCAL_LISTENER parameter, and check with node A
node B:
$ export ORACLE_SID=+ASM2
$ sqlplus / as sysdba
SQL> show parameter LOCAL_LISTENER
node A:
$ export ORACLE_SID=+ASM1
$ sqlplus / as sysdba
SQL> show parameter LOCAL_LISTENER
Or… If you use 1521 port, On node B
$ export ORACLE_SID=+ASM2
$ sqlplus / as sysdba
SQL> show parameter LOCAL_LISTENER
SQL> alter system set LOCAL_LISTENER=” ;
SQL> alter system register;
$ lsnrctl service