diff --git a/homeassistant/components/data_grand_lyon/coordinator.py b/homeassistant/components/data_grand_lyon/coordinator.py
index e93b3f16f0f238..10228a9154c11f 100644
--- a/homeassistant/components/data_grand_lyon/coordinator.py
+++ b/homeassistant/components/data_grand_lyon/coordinator.py
@@ -64,7 +64,8 @@ async def _async_update_data(self) -> dict[str, list[TclPassage]]:
                     403,
                 ):
                     raise ConfigEntryAuthFailed(
-                        "Authentication failed for Data Grand Lyon"
+                        translation_domain=DOMAIN,
+                        translation_key="auth_failed",
                     ) from result
                 LOGGER.warning(
                     "Error fetching departures for stop %s: %s",
@@ -75,5 +76,8 @@ async def _async_update_data(self) -> dict[str, list[TclPassage]]:
             stops[subentry.subentry_id] = result
 
         if stop_subentries and not stops:
-            raise UpdateFailed("Error fetching DataGrandLyon data: all requests failed")
+            raise UpdateFailed(
+                translation_domain=DOMAIN,
+                translation_key="update_failed_all_stops",
+            )
         return stops
diff --git a/homeassistant/components/data_grand_lyon/quality_scale.yaml b/homeassistant/components/data_grand_lyon/quality_scale.yaml
index 8bdb667f07f49b..2e2522901f0e3a 100644
--- a/homeassistant/components/data_grand_lyon/quality_scale.yaml
+++ b/homeassistant/components/data_grand_lyon/quality_scale.yaml
@@ -59,8 +59,8 @@ rules:
   entity-category: done
   entity-device-class: done
   entity-disabled-by-default: done
-  entity-translations: todo
-  exception-translations: todo
+  entity-translations: done
+  exception-translations: done
   icon-translations: done
   reconfiguration-flow: todo
   repair-issues:
diff --git a/homeassistant/components/data_grand_lyon/strings.json b/homeassistant/components/data_grand_lyon/strings.json
index 5b3a6b10f5c0bf..55e36d4c325eb3 100644
--- a/homeassistant/components/data_grand_lyon/strings.json
+++ b/homeassistant/components/data_grand_lyon/strings.json
@@ -93,5 +93,13 @@
         }
       }
     }
+  },
+  "exceptions": {
+    "auth_failed": {
+      "message": "Authentication failed for Data Grand Lyon."
+    },
+    "update_failed_all_stops": {
+      "message": "Error fetching Data Grand Lyon data: all requests failed."
+    }
   }
 }