diff --git a/homeassistant/components/husqvarna_automower/sensor.py b/homeassistant/components/husqvarna_automower/sensor.py
index 0e3e6771cec..ed80366c648 100644
--- a/homeassistant/components/husqvarna_automower/sensor.py
+++ b/homeassistant/components/husqvarna_automower/sensor.py
@@ -7,7 +7,12 @@ import logging
 from typing import TYPE_CHECKING, Any
 from zoneinfo import ZoneInfo
 
-from aioautomower.model import MowerAttributes, MowerModes, RestrictedReasons
+from aioautomower.model import (
+    MowerAttributes,
+    MowerModes,
+    MowerStates,
+    RestrictedReasons,
+)
 from aioautomower.utils import naive_to_aware
 
 from homeassistant.components.sensor import (
@@ -82,6 +87,9 @@ ERROR_KEY_LIST = [
     "docking_sensor_defect",
     "electronic_problem",
     "empty_battery",
+    MowerStates.ERROR.lower(),
+    MowerStates.ERROR_AT_POWER_UP.lower(),
+    MowerStates.FATAL_ERROR.lower(),
     "folding_cutting_deck_sensor_defect",
     "folding_sensor_activated",
     "geofence_problem",
@@ -176,6 +184,12 @@ ERROR_KEY_LIST = [
     "zone_generator_problem",
 ]
 
+ERROR_STATES = {
+    MowerStates.ERROR,
+    MowerStates.ERROR_AT_POWER_UP,
+    MowerStates.FATAL_ERROR,
+}
+
 RESTRICTED_REASONS: list = [
     RestrictedReasons.ALL_WORK_AREAS_COMPLETED.lower(),
     RestrictedReasons.DAILY_LIMIT.lower(),
@@ -225,6 +239,16 @@ def _get_current_work_area_dict(data: MowerAttributes) -> Mapping[str, Any]:
     return {ATTR_WORK_AREA_ID_ASSIGNMENT: data.work_area_dict}
 
 
+@callback
+def _get_error_string(data: MowerAttributes) -> str:
+    """Return the error key, if not provided the mower state or `no error`."""
+    if data.mower.error_key is not None:
+        return data.mower.error_key
+    if data.mower.state in ERROR_STATES:
+        return data.mower.state.lower()
+    return "no_error"
+
+
 @dataclass(frozen=True, kw_only=True)
 class AutomowerSensorEntityDescription(SensorEntityDescription):
     """Describes Automower sensor entity."""
@@ -351,9 +375,7 @@ SENSOR_TYPES: tuple[AutomowerSensorEntityDescription, ...] = (
         translation_key="error",
         device_class=SensorDeviceClass.ENUM,
         option_fn=lambda data: ERROR_KEY_LIST,
-        value_fn=lambda data: (
-            "no_error" if data.mower.error_key is None else data.mower.error_key
-        ),
+        value_fn=_get_error_string,
     ),
     AutomowerSensorEntityDescription(
         key="restricted_reason",
diff --git a/homeassistant/components/husqvarna_automower/strings.json b/homeassistant/components/husqvarna_automower/strings.json
index 5930a04376d..baeba4684ac 100644
--- a/homeassistant/components/husqvarna_automower/strings.json
+++ b/homeassistant/components/husqvarna_automower/strings.json
@@ -118,6 +118,9 @@
           "docking_sensor_defect": "Docking sensor defect",
           "electronic_problem": "Electronic problem",
           "empty_battery": "Empty battery",
+          "error": "Error",
+          "error_at_power_up": "Error at power up",
+          "fatal_error": "Fatal error",
           "folding_cutting_deck_sensor_defect": "Folding cutting deck sensor defect",
           "folding_sensor_activated": "Folding sensor activated",
           "geofence_problem": "Geofence problem",
diff --git a/tests/components/husqvarna_automower/snapshots/test_sensor.ambr b/tests/components/husqvarna_automower/snapshots/test_sensor.ambr
index 13f602b902c..c090b835ae3 100644
--- a/tests/components/husqvarna_automower/snapshots/test_sensor.ambr
+++ b/tests/components/husqvarna_automower/snapshots/test_sensor.ambr
@@ -162,6 +162,9 @@
         'docking_sensor_defect',
         'electronic_problem',
         'empty_battery',
+        'error',
+        'error_at_power_up',
+        'fatal_error',
         'folding_cutting_deck_sensor_defect',
         'folding_sensor_activated',
         'geofence_problem',
@@ -340,6 +343,9 @@
         'docking_sensor_defect',
         'electronic_problem',
         'empty_battery',
+        'error',
+        'error_at_power_up',
+        'fatal_error',
         'folding_cutting_deck_sensor_defect',
         'folding_sensor_activated',
         'geofence_problem',
@@ -1165,6 +1171,9 @@
         'docking_sensor_defect',
         'electronic_problem',
         'empty_battery',
+        'error',
+        'error_at_power_up',
+        'fatal_error',
         'folding_cutting_deck_sensor_defect',
         'folding_sensor_activated',
         'geofence_problem',
@@ -1343,6 +1352,9 @@
         'docking_sensor_defect',
         'electronic_problem',
         'empty_battery',
+        'error',
+        'error_at_power_up',
+        'fatal_error',
         'folding_cutting_deck_sensor_defect',
         'folding_sensor_activated',
         'geofence_problem',
diff --git a/tests/components/husqvarna_automower/test_sensor.py b/tests/components/husqvarna_automower/test_sensor.py
index 1a4f545ac96..39bff398da6 100644
--- a/tests/components/husqvarna_automower/test_sensor.py
+++ b/tests/components/husqvarna_automower/test_sensor.py
@@ -2,7 +2,7 @@
 
 from unittest.mock import AsyncMock, patch
 
-from aioautomower.model import MowerModes
+from aioautomower.model import MowerModes, MowerStates
 from aioautomower.utils import mower_list_to_dictionary_dataclass
 from freezegun.api import FrozenDateTimeFactory
 import pytest
@@ -163,11 +163,15 @@ async def test_error_sensor(
     )
     await setup_integration(hass, mock_config_entry)
 
-    for state, expected_state in (
-        (None, "no_error"),
-        ("can_error", "can_error"),
+    for state, error_key, expected_state in (
+        (MowerStates.IN_OPERATION, None, "no_error"),
+        (MowerStates.ERROR, "can_error", "can_error"),
+        (MowerStates.ERROR, None, MowerStates.ERROR.lower()),
+        (MowerStates.ERROR_AT_POWER_UP, None, MowerStates.ERROR_AT_POWER_UP.lower()),
+        (MowerStates.FATAL_ERROR, None, MowerStates.FATAL_ERROR.lower()),
     ):
-        values[TEST_MOWER_ID].mower.error_key = state
+        values[TEST_MOWER_ID].mower.state = state
+        values[TEST_MOWER_ID].mower.error_key = error_key
         mock_automower_client.get_status.return_value = values
         freezer.tick(SCAN_INTERVAL)
         async_fire_time_changed(hass)