diff --git a/homeassistant/components/playstation_network/diagnostics.py b/homeassistant/components/playstation_network/diagnostics.py
new file mode 100644
index 00000000000..8332572177d
--- /dev/null
+++ b/homeassistant/components/playstation_network/diagnostics.py
@@ -0,0 +1,55 @@
+"""Diagnostics support for PlayStation Network."""
+
+from __future__ import annotations
+
+from dataclasses import asdict
+from typing import Any
+
+from psnawp_api.models.trophies import PlatformType
+
+from homeassistant.components.diagnostics import async_redact_data
+from homeassistant.core import HomeAssistant
+
+from .coordinator import PlaystationNetworkConfigEntry, PlaystationNetworkCoordinator
+
+TO_REDACT = {
+    "account_id",
+    "firstName",
+    "lastName",
+    "middleName",
+    "onlineId",
+    "url",
+    "username",
+}
+
+
+async def async_get_config_entry_diagnostics(
+    hass: HomeAssistant, entry: PlaystationNetworkConfigEntry
+) -> dict[str, Any]:
+    """Return diagnostics for a config entry."""
+    coordinator: PlaystationNetworkCoordinator = entry.runtime_data
+
+    return {
+        "data": async_redact_data(
+            _serialize_platform_types(asdict(coordinator.data)), TO_REDACT
+        ),
+    }
+
+
+def _serialize_platform_types(data: Any) -> Any:
+    """Recursively convert PlatformType enums to strings in dicts and sets."""
+    if isinstance(data, dict):
+        return {
+            (
+                platform.value if isinstance(platform, PlatformType) else platform
+            ): _serialize_platform_types(record)
+            for platform, record in data.items()
+        }
+    if isinstance(data, set):
+        return [
+            record.value if isinstance(record, PlatformType) else record
+            for record in data
+        ]
+    if isinstance(data, PlatformType):
+        return data.value
+    return data
diff --git a/homeassistant/components/playstation_network/quality_scale.yaml b/homeassistant/components/playstation_network/quality_scale.yaml
index e173c4a710c..a98c30a7667 100644
--- a/homeassistant/components/playstation_network/quality_scale.yaml
+++ b/homeassistant/components/playstation_network/quality_scale.yaml
@@ -44,7 +44,7 @@ rules:
 
   # Gold
   devices: done
-  diagnostics: todo
+  diagnostics: done
   discovery-update-info:
     status: exempt
     comment: Discovery flow is not applicable for this integration
diff --git a/tests/components/playstation_network/snapshots/test_diagnostics.ambr b/tests/components/playstation_network/snapshots/test_diagnostics.ambr
new file mode 100644
index 00000000000..405cee04559
--- /dev/null
+++ b/tests/components/playstation_network/snapshots/test_diagnostics.ambr
@@ -0,0 +1,79 @@
+# serializer version: 1
+# name: test_diagnostics
+  dict({
+    'data': dict({
+      'account_id': '**REDACTED**',
+      'active_sessions': dict({
+        'PS5': dict({
+          'format': 'PS5',
+          'media_image_url': 'https://image.api.playstation.com/vulcan/ap/rnd/202211/2222/l8QTN7ThQK3lRBHhB3nX1s7h.png',
+          'platform': 'PS5',
+          'status': 'online',
+          'title_id': 'PPSA07784_00',
+          'title_name': 'STAR WARS Jedi: Survivor™',
+        }),
+      }),
+      'available': True,
+      'presence': dict({
+        'basicPresence': dict({
+          'availability': 'availableToPlay',
+          'gameTitleInfoList': list([
+            dict({
+              'conceptIconUrl': 'https://image.api.playstation.com/vulcan/ap/rnd/202211/2222/l8QTN7ThQK3lRBHhB3nX1s7h.png',
+              'format': 'PS5',
+              'launchPlatform': 'PS5',
+              'npTitleId': 'PPSA07784_00',
+              'titleName': 'STAR WARS Jedi: Survivor™',
+            }),
+          ]),
+          'primaryPlatformInfo': dict({
+            'onlineStatus': 'online',
+            'platform': 'PS5',
+          }),
+        }),
+      }),
+      'profile': dict({
+        'aboutMe': 'Never Gonna Give You Up',
+        'avatars': list([
+          dict({
+            'size': 'xl',
+            'url': '**REDACTED**',
+          }),
+        ]),
+        'isMe': True,
+        'isOfficiallyVerified': False,
+        'isPlus': True,
+        'languages': list([
+          'de-DE',
+        ]),
+        'onlineId': '**REDACTED**',
+        'personalDetail': dict({
+          'firstName': '**REDACTED**',
+          'lastName': '**REDACTED**',
+          'profilePictures': list([
+            dict({
+              'size': 'xl',
+              'url': '**REDACTED**',
+            }),
+          ]),
+        }),
+      }),
+      'registered_platforms': list([
+        'PS5',
+      ]),
+      'trophy_summary': dict({
+        'account_id': '**REDACTED**',
+        'earned_trophies': dict({
+          'bronze': 14450,
+          'gold': 11754,
+          'platinum': 1398,
+          'silver': 8722,
+        }),
+        'progress': 19,
+        'tier': 10,
+        'trophy_level': 1079,
+      }),
+      'username': '**REDACTED**',
+    }),
+  })
+# ---
diff --git a/tests/components/playstation_network/test_diagnostics.py b/tests/components/playstation_network/test_diagnostics.py
new file mode 100644
index 00000000000..b803a213207
--- /dev/null
+++ b/tests/components/playstation_network/test_diagnostics.py
@@ -0,0 +1,28 @@
+"""Tests for PlayStation Network diagnostics."""
+
+import pytest
+from syrupy.assertion import SnapshotAssertion
+
+from homeassistant.core import HomeAssistant
+
+from tests.common import MockConfigEntry
+from tests.components.diagnostics import get_diagnostics_for_config_entry
+from tests.typing import ClientSessionGenerator
+
+
+@pytest.mark.usefixtures("mock_psnawpapi")
+async def test_diagnostics(
+    hass: HomeAssistant,
+    hass_client: ClientSessionGenerator,
+    config_entry: MockConfigEntry,
+    snapshot: SnapshotAssertion,
+) -> None:
+    """Test diagnostics."""
+
+    config_entry.add_to_hass(hass)
+    await hass.config_entries.async_setup(config_entry.entry_id)
+    await hass.async_block_till_done()
+    assert (
+        await get_diagnostics_for_config_entry(hass, hass_client, config_entry)
+        == snapshot
+    )