diff --git a/homeassistant/components/transmission/config_flow.py b/homeassistant/components/transmission/config_flow.py
index 56ed3081b63..890a0f3dfa9 100644
--- a/homeassistant/components/transmission/config_flow.py
+++ b/homeassistant/components/transmission/config_flow.py
@@ -64,13 +64,12 @@ class TransmissionFlowHandler(config_entries.ConfigFlow, domain=DOMAIN):
                 if entry.data[CONF_NAME] == user_input[CONF_NAME]:
                     errors[CONF_NAME] = "name_exists"
                     break
-
             try:
                 await get_api(self.hass, user_input)
 
             except AuthenticationError:
-                errors[CONF_USERNAME] = "wrong_credentials"
-                errors[CONF_PASSWORD] = "wrong_credentials"
+                errors[CONF_USERNAME] = "invalid_auth"
+                errors[CONF_PASSWORD] = "invalid_auth"
             except (CannotConnect, UnknownError):
                 errors["base"] = "cannot_connect"
 
diff --git a/homeassistant/components/transmission/strings.json b/homeassistant/components/transmission/strings.json
index c8d999a920c..81725ad7d16 100644
--- a/homeassistant/components/transmission/strings.json
+++ b/homeassistant/components/transmission/strings.json
@@ -13,12 +13,12 @@
       }
     },
     "error": {
-      "name_exists": "Name already exists",
-      "wrong_credentials": "Wrong username or password",
-      "cannot_connect": "Unable to Connect to host"
+      "name_exists": "[%key:common::config_flow::data::name%] already exists",
+      "invalid_auth": "[%key:common::config_flow::error::invalid_auth%]",
+      "cannot_connect": "[%key:common::config_flow::error::cannot_connect%]"
     },
     "abort": {
-      "already_configured": "Host is already configured."
+      "already_configured": "[%key:common::config_flow::abort::already_configured_device%]"
     }
   },
   "options": {
diff --git a/tests/components/transmission/test_config_flow.py b/tests/components/transmission/test_config_flow.py
index 0820e71ae3b..0b57ab59913 100644
--- a/tests/components/transmission/test_config_flow.py
+++ b/tests/components/transmission/test_config_flow.py
@@ -264,8 +264,8 @@ async def test_error_on_wrong_credentials(hass, auth_error):
     )
     assert result["type"] == data_entry_flow.RESULT_TYPE_FORM
     assert result["errors"] == {
-        CONF_USERNAME: "wrong_credentials",
-        CONF_PASSWORD: "wrong_credentials",
+        CONF_USERNAME: "invalid_auth",
+        CONF_PASSWORD: "invalid_auth",
     }