diff --git a/ironic/db/sqlalchemy/api.py b/ironic/db/sqlalchemy/api.py
index 12bb65dc32..09204d6809 100644
--- a/ironic/db/sqlalchemy/api.py
+++ b/ironic/db/sqlalchemy/api.py
@@ -1276,11 +1276,13 @@ class Connection(api.Connection):
     def destroy_portgroup(self, portgroup_id):
         def portgroup_not_empty(session):
             """Checks whether the portgroup does not have ports."""
-            with _session_for_read() as session:
-                res = session.scalar(
-                    sa.select(
-                        sa.func.count(models.Port.id)
-                    ).where(models.Port.portgroup_id == portgroup_id)) != 0
+            res = session.scalar(
+                sa.select(
+                    sa.func.count(models.Port.id)
+                ).join(
+                    models.Portgroup,
+                    models.Port.portgroup_id == models.Portgroup.id
+                ).where(models.Port.portgroup_id == portgroup_id)) != 0
             return res
 
         with _session_for_write() as session:
diff --git a/ironic/objects/portgroup.py b/ironic/objects/portgroup.py
index ef21a5f90e..fa24b9a13b 100644
--- a/ironic/objects/portgroup.py
+++ b/ironic/objects/portgroup.py
@@ -285,7 +285,7 @@ class Portgroup(base.IronicObject, object_base.VersionedObjectDictCompat):
         :raises: PortgroupNotEmpty, PortgroupNotFound
 
         """
-        self.dbapi.destroy_portgroup(self.uuid)
+        self.dbapi.destroy_portgroup(self.id)
         self.obj_reset_changes()
 
     # NOTE(xek): We don't want to enable RPC on this call just yet. Remotable
diff --git a/releasenotes/notes/resolve-portgroup-deletion-failure-3b3b8b3253c0b902.yaml b/releasenotes/notes/resolve-portgroup-deletion-failure-3b3b8b3253c0b902.yaml
new file mode 100644
index 0000000000..8960530528
--- /dev/null
+++ b/releasenotes/notes/resolve-portgroup-deletion-failure-3b3b8b3253c0b902.yaml
@@ -0,0 +1,5 @@
+---
+fixes:
+  - |
+    Fix portgroup deletion failure by resolving id/uuid mix-up and adding a
+    port-to-portgroup join query.