diff --git a/.coveragerc b/.coveragerc
index d3c5094d4b1..171415f1c79 100644
--- a/.coveragerc
+++ b/.coveragerc
@@ -893,6 +893,7 @@ omit =
     homeassistant/components/pcal9535a/*
     homeassistant/components/pencom/switch.py
     homeassistant/components/philips_js/__init__.py
+    homeassistant/components/philips_js/diagnostics.py
     homeassistant/components/philips_js/light.py
     homeassistant/components/philips_js/media_player.py
     homeassistant/components/philips_js/remote.py
diff --git a/homeassistant/components/philips_js/diagnostics.py b/homeassistant/components/philips_js/diagnostics.py
new file mode 100644
index 00000000000..889b8e47e3f
--- /dev/null
+++ b/homeassistant/components/philips_js/diagnostics.py
@@ -0,0 +1,59 @@
+"""Diagnostics support for Philips JS."""
+from __future__ import annotations
+
+from typing import Any
+
+from homeassistant.components.diagnostics import async_redact_data
+from homeassistant.config_entries import ConfigEntry
+from homeassistant.core import HomeAssistant
+
+from . import PhilipsTVDataUpdateCoordinator
+from .const import DOMAIN
+
+TO_REDACT = {
+    "serialnumber_encrypted",
+    "serialnumber",
+    "deviceid_encrypted",
+    "deviceid",
+    "username",
+    "password",
+    "title",
+    "unique_id",
+}
+
+
+async def async_get_config_entry_diagnostics(
+    hass: HomeAssistant, entry: ConfigEntry
+) -> dict[str, Any]:
+    """Return diagnostics for a config entry."""
+    coordinator: PhilipsTVDataUpdateCoordinator = hass.data[DOMAIN][entry.entry_id]
+    api = coordinator.api
+
+    return {
+        "entry": async_redact_data(entry.as_dict(), TO_REDACT),
+        "data": {
+            "system": async_redact_data(api.system, TO_REDACT),
+            "powerstate": api.powerstate,
+            "context": api.context,
+            "application": api.application,
+            "applications": api.applications,
+            "source_id": api.source_id,
+            "sources": api.sources,
+            "ambilight_styles": api.ambilight_styles,
+            "ambilight_topology": api.ambilight_topology,
+            "ambilight_current_configuration": api.ambilight_current_configuration,
+            "ambilight_mode_raw": api.ambilight_mode_raw,
+            "ambilight_modes": api.ambilight_modes,
+            "ambilight_power_raw": api.ambilight_power_raw,
+            "ambilight_power": api.ambilight_power,
+            "ambilight_cached": api.ambilight_cached,
+            "ambilight_measured": api.ambilight_measured,
+            "ambilight_processed": api.ambilight_processed,
+            "screenstate": api.screenstate,
+            "on": api.on,
+            "channel": api.channel,
+            "channels": api.channels,
+            "channel_lists": api.channel_lists,
+            "favorite_lists": api.favorite_lists,
+        },
+    }