diff --git a/homeassistant/components/sfr_box/diagnostics.py b/homeassistant/components/sfr_box/diagnostics.py
index e85bd602b71..1fb98053267 100644
--- a/homeassistant/components/sfr_box/diagnostics.py
+++ b/homeassistant/components/sfr_box/diagnostics.py
@@ -26,13 +26,17 @@ async def async_get_config_entry_diagnostics(
             "data": dict(entry.data),
         },
         "data": {
-            "dsl": async_redact_data(dataclasses.asdict(data.dsl.data), TO_REDACT),
+            "dsl": async_redact_data(
+                dataclasses.asdict(await data.system.box.dsl_get_info()), TO_REDACT
+            ),
             "ftth": async_redact_data(
                 dataclasses.asdict(await data.system.box.ftth_get_info()), TO_REDACT
             ),
             "system": async_redact_data(
-                dataclasses.asdict(data.system.data), TO_REDACT
+                dataclasses.asdict(await data.system.box.system_get_info()), TO_REDACT
+            ),
+            "wan": async_redact_data(
+                dataclasses.asdict(await data.system.box.wan_get_info()), TO_REDACT
             ),
-            "wan": async_redact_data(dataclasses.asdict(data.wan.data), TO_REDACT),
         },
     }
diff --git a/tests/components/sfr_box/snapshots/test_diagnostics.ambr b/tests/components/sfr_box/snapshots/test_diagnostics.ambr
index fe9268358f9..22a914f8a79 100644
--- a/tests/components/sfr_box/snapshots/test_diagnostics.ambr
+++ b/tests/components/sfr_box/snapshots/test_diagnostics.ambr
@@ -1,5 +1,5 @@
 # serializer version: 1
-# name: test_entry_diagnostics
+# name: test_entry_diagnostics[adsl]
   dict({
     'data': dict({
       'dsl': dict({
@@ -58,3 +58,62 @@
     }),
   })
 # ---
+# name: test_entry_diagnostics[ftth]
+  dict({
+    'data': dict({
+      'dsl': dict({
+        'attenuation_down': 28.5,
+        'attenuation_up': 20.8,
+        'counter': 16,
+        'crc': 0,
+        'line_status': 'No Defect',
+        'linemode': 'ADSL2+',
+        'noise_down': 5.8,
+        'noise_up': 6.0,
+        'rate_down': 5549,
+        'rate_up': 187,
+        'status': 'up',
+        'training': 'Showtime',
+        'uptime': 450796,
+      }),
+      'ftth': dict({
+        'status': 'down',
+        'wanfibre': 'out',
+      }),
+      'system': dict({
+        'alimvoltage': 12251,
+        'current_datetime': '202212282233',
+        'idur': 'RP3P85K',
+        'mac_addr': '**REDACTED**',
+        'net_infra': 'ftth',
+        'net_mode': 'router',
+        'product_id': 'NB6VAC-FXC-r0',
+        'refclient': '',
+        'serial_number': '**REDACTED**',
+        'temperature': 27560,
+        'uptime': 2353575,
+        'version_bootloader': 'NB6VAC-BOOTLOADER-R4.0.8',
+        'version_dsldriver': 'NB6VAC-XDSL-A2pv6F039p',
+        'version_mainfirmware': 'NB6VAC-MAIN-R4.0.44k',
+        'version_rescuefirmware': 'NB6VAC-MAIN-R4.0.44k',
+      }),
+      'wan': dict({
+        'infra': 'adsl',
+        'infra6': '',
+        'ip_addr': '**REDACTED**',
+        'ipv6_addr': '',
+        'mode': 'adsl/routed',
+        'status': 'up',
+        'status6': 'down',
+        'uptime': 297464,
+        'uptime6': None,
+      }),
+    }),
+    'entry': dict({
+      'data': dict({
+        'host': '192.168.0.1',
+      }),
+      'title': 'Mock Title',
+    }),
+  })
+# ---
diff --git a/tests/components/sfr_box/test_diagnostics.py b/tests/components/sfr_box/test_diagnostics.py
index 37e3ba9487f..a433236ab7a 100644
--- a/tests/components/sfr_box/test_diagnostics.py
+++ b/tests/components/sfr_box/test_diagnostics.py
@@ -3,6 +3,7 @@ from collections.abc import Generator
 from unittest.mock import patch
 
 import pytest
+from sfrbox_api.models import SystemInfo
 from syrupy.assertion import SnapshotAssertion
 
 from homeassistant.config_entries import ConfigEntry
@@ -23,13 +24,17 @@ def override_platforms() -> Generator[None, None, None]:
         yield
 
 
+@pytest.mark.parametrize("net_infra", ["adsl", "ftth"])
 async def test_entry_diagnostics(
     hass: HomeAssistant,
     config_entry: ConfigEntry,
     hass_client: ClientSessionGenerator,
     snapshot: SnapshotAssertion,
+    system_get_info: SystemInfo,
+    net_infra: str,
 ) -> None:
     """Test config entry diagnostics."""
+    system_get_info.net_infra = net_infra
     await hass.config_entries.async_setup(config_entry.entry_id)
     await hass.async_block_till_done()