diff --git a/.coveragerc b/.coveragerc
index b592f1c416d..03e99959fd4 100644
--- a/.coveragerc
+++ b/.coveragerc
@@ -976,6 +976,7 @@ omit =
     homeassistant/components/sensibo/__init__.py
     homeassistant/components/sensibo/climate.py
     homeassistant/components/sensibo/coordinator.py
+    homeassistant/components/sensibo/diagnostics.py
     homeassistant/components/serial/sensor.py
     homeassistant/components/serial_pm/sensor.py
     homeassistant/components/sesame/lock.py
diff --git a/homeassistant/components/sensibo/diagnostics.py b/homeassistant/components/sensibo/diagnostics.py
new file mode 100644
index 00000000000..d3e2382c7a8
--- /dev/null
+++ b/homeassistant/components/sensibo/diagnostics.py
@@ -0,0 +1,18 @@
+"""Diagnostics support for Sensibo."""
+from __future__ import annotations
+
+from typing import Any
+
+from homeassistant.config_entries import ConfigEntry
+from homeassistant.core import HomeAssistant
+
+from .const import DOMAIN
+from .coordinator import SensiboDataUpdateCoordinator
+
+
+async def async_get_config_entry_diagnostics(
+    hass: HomeAssistant, entry: ConfigEntry
+) -> dict[str, Any]:
+    """Return diagnostics for a config entry."""
+    coordinator: SensiboDataUpdateCoordinator = hass.data[DOMAIN][entry.entry_id]
+    return coordinator.data