diff --git a/homeassistant/components/teslemetry/entity.py b/homeassistant/components/teslemetry/entity.py
index 170d4e3a3ae..588bf0b1b65 100644
--- a/homeassistant/components/teslemetry/entity.py
+++ b/homeassistant/components/teslemetry/entity.py
@@ -9,6 +9,7 @@ from tesla_fleet_api.teslemetry import EnergySite, Vehicle
 from homeassistant.exceptions import ServiceValidationError
 from homeassistant.helpers.device_registry import DeviceInfo
 from homeassistant.helpers.entity import Entity
+from homeassistant.helpers.typing import StateType
 from homeassistant.helpers.update_coordinator import CoordinatorEntity
 
 from .const import DOMAIN
@@ -228,7 +229,7 @@ class TeslemetryWallConnectorEntity(TeslemetryPollingEntity):
         super().__init__(data.live_coordinator, key)
 
     @property
-    def _value(self) -> int:
+    def _value(self) -> StateType:
         """Return a specific wall connector value from coordinator data."""
         return (
             self.coordinator.data.get("wall_connectors", {})
diff --git a/homeassistant/components/teslemetry/sensor.py b/homeassistant/components/teslemetry/sensor.py
index 52b978dfd21..ee1dddf4774 100644
--- a/homeassistant/components/teslemetry/sensor.py
+++ b/homeassistant/components/teslemetry/sensor.py
@@ -1785,8 +1785,7 @@ class TeslemetryWallConnectorSensorEntity(TeslemetryWallConnectorEntity, SensorE
 
     def _async_update_attrs(self) -> None:
         """Update the attributes of the sensor."""
-        if self.exists:
-            self._attr_native_value = self.entity_description.value_fn(self._value)
+        self._attr_native_value = self.entity_description.value_fn(self._value)
 
 
 class TeslemetryEnergyInfoSensorEntity(TeslemetryEnergyInfoEntity, SensorEntity):
diff --git a/tests/components/teslemetry/snapshots/test_sensor.ambr b/tests/components/teslemetry/snapshots/test_sensor.ambr
index 8e9ce51e297..3b860039b03 100644
--- a/tests/components/teslemetry/snapshots/test_sensor.ambr
+++ b/tests/components/teslemetry/snapshots/test_sensor.ambr
@@ -4978,7 +4978,7 @@
     'last_changed': <ANY>,
     'last_reported': <ANY>,
     'last_updated': <ANY>,
-    'state': 'unknown',
+    'state': 'disconnected',
   })
 # ---
 # name: test_sensors[sensor.wall_connector_vehicle-statealt]
@@ -4991,7 +4991,7 @@
     'last_changed': <ANY>,
     'last_reported': <ANY>,
     'last_updated': <ANY>,
-    'state': 'unknown',
+    'state': 'disconnected',
   })
 # ---
 # name: test_sensors[sensor.wall_connector_vehicle_2-entry]
@@ -5038,7 +5038,7 @@
     'last_changed': <ANY>,
     'last_reported': <ANY>,
     'last_updated': <ANY>,
-    'state': 'unknown',
+    'state': 'disconnected',
   })
 # ---
 # name: test_sensors[sensor.wall_connector_vehicle_2-statealt]
@@ -5051,7 +5051,7 @@
     'last_changed': <ANY>,
     'last_reported': <ANY>,
     'last_updated': <ANY>,
-    'state': 'unknown',
+    'state': 'disconnected',
   })
 # ---
 # name: test_sensors_streaming[sensor.test_battery_level-state]