From 8ce9238f7acd6aed5a630630dd07ddff74ae1990 Mon Sep 17 00:00:00 2001
From: Brett Adams <Bre77@users.noreply.github.com>
Date: Tue, 28 Oct 2025 21:42:53 +1000
Subject: [PATCH] Handle cpd_enabled error in Tessie (#155322)

---
 homeassistant/components/tessie/const.py     |  1 +
 homeassistant/components/tessie/strings.json |  3 +++
 tests/components/tessie/test_climate.py      | 18 ++++++++++++++++++
 3 files changed, 22 insertions(+)

diff --git a/homeassistant/components/tessie/const.py b/homeassistant/components/tessie/const.py
index 4731f5168a2..42dc25a90f2 100644
--- a/homeassistant/components/tessie/const.py
+++ b/homeassistant/components/tessie/const.py
@@ -21,6 +21,7 @@ TRANSLATED_ERRORS = {
     "already inactive": "already_inactive",
     "incorrect pin": "incorrect_pin",
     "no cable": "no_cable",
+    "cpd_enabled": "cpd_enabled",
 }
 
 
diff --git a/homeassistant/components/tessie/strings.json b/homeassistant/components/tessie/strings.json
index ebb311f0ec1..df68ad4cf0c 100644
--- a/homeassistant/components/tessie/strings.json
+++ b/homeassistant/components/tessie/strings.json
@@ -517,6 +517,9 @@
     "command_failed": {
       "message": "Command failed, {message}"
     },
+    "cpd_enabled": {
+      "message": "Child presence detection has blocked the command, remove weight from seats."
+    },
     "incorrect_pin": {
       "message": "Incorrect PIN for {name}."
     },
diff --git a/tests/components/tessie/test_climate.py b/tests/components/tessie/test_climate.py
index 4a0134c1b58..87ba067ae5b 100644
--- a/tests/components/tessie/test_climate.py
+++ b/tests/components/tessie/test_climate.py
@@ -130,3 +130,21 @@ async def test_errors(hass: HomeAssistant) -> None:
         )
     mock_set.assert_called_once()
     assert error.value.__cause__ == ERROR_UNKNOWN
+
+    # Test setting climate with child presence detection error
+    with (
+        patch(
+            "homeassistant.components.tessie.climate.start_climate_preconditioning",
+            return_value={"result": False, "reason": "cpd_enabled"},
+        ) as mock_set,
+        pytest.raises(HomeAssistantError) as error,
+    ):
+        await hass.services.async_call(
+            CLIMATE_DOMAIN,
+            SERVICE_SET_HVAC_MODE,
+            {ATTR_ENTITY_ID: [entity_id], ATTR_HVAC_MODE: HVACMode.HEAT_COOL},
+            blocking=True,
+        )
+    mock_set.assert_called_once()
+    assert error.value.translation_domain == "tessie"
+    assert error.value.translation_key == "cpd_enabled"