diff --git a/tests/components/freshr/test_init.py b/tests/components/freshr/test_init.py
index e89bf80c64b..629abdc4e55 100644
--- a/tests/components/freshr/test_init.py
+++ b/tests/components/freshr/test_init.py
@@ -10,7 +10,8 @@ from homeassistant.components.freshr.coordinator import (
     DEVICES_SCAN_INTERVAL,
     READINGS_SCAN_INTERVAL,
 )
-from homeassistant.config_entries import ConfigEntryState
+from homeassistant.config_entries import SOURCE_REAUTH, ConfigEntryState
+from homeassistant.const import STATE_UNAVAILABLE
 from homeassistant.core import HomeAssistant
 from homeassistant.helpers import device_registry as dr, entity_registry as er
 
@@ -116,3 +117,58 @@ async def test_stale_device_not_removed_on_poll_error(
     await hass.async_block_till_done()
 
     assert device_registry.async_get_device(identifiers={(DOMAIN, DEVICE_ID)})
+
+
+@pytest.mark.usefixtures("entity_registry_enabled_by_default", "init_integration")
+async def test_readings_login_error_triggers_reauth(
+    hass: HomeAssistant,
+    mock_freshr_client: MagicMock,
+    mock_config_entry: MockConfigEntry,
+    entity_registry: er.EntityRegistry,
+    freezer: FrozenDateTimeFactory,
+) -> None:
+    """Test that a LoginError during readings refresh triggers a reauth flow."""
+    assert not hass.config_entries.flow.async_progress_by_handler(DOMAIN)
+
+    mock_freshr_client.fetch_device_current.reset_mock()
+    mock_freshr_client.fetch_device_current.side_effect = LoginError("session expired")
+    freezer.tick(READINGS_SCAN_INTERVAL)
+    async_fire_time_changed(hass, freezer())
+    await hass.async_block_till_done()
+
+    assert mock_freshr_client.fetch_device_current.called
+
+    assert mock_config_entry.state is ConfigEntryState.LOADED
+
+    entity_ids = [
+        entry.entity_id
+        for entry in er.async_entries_for_config_entry(
+            entity_registry, mock_config_entry.entry_id
+        )
+    ]
+    assert entity_ids
+    for entity_id in entity_ids:
+        state = hass.states.get(entity_id)
+        assert state is not None, f"State for {entity_id} is None"
+        assert state.state == STATE_UNAVAILABLE, (
+            f"Expected {entity_id} to be {STATE_UNAVAILABLE!r}, got {state.state!r}"
+        )
+
+    flows = hass.config_entries.flow.async_progress_by_handler(DOMAIN)
+    relevant_flows = [
+        {
+            "entry_id": flow.get("context", {}).get("entry_id"),
+            "source": flow.get("context", {}).get("source"),
+            "step_id": flow.get("step_id"),
+        }
+        for flow in flows
+    ]
+    assert any(
+        flow["entry_id"] == mock_config_entry.entry_id
+        and flow["source"] == SOURCE_REAUTH
+        and flow["step_id"] == "reauth_confirm"
+        for flow in relevant_flows
+    ), (
+        "Expected a reauth_confirm flow for the config entry, "
+        f"but found flows: {relevant_flows}"
+    )