diff --git a/pymongo/helpers_shared.py b/pymongo/helpers_shared.py
index c3611df7c8..1ba69876e9 100644
--- a/pymongo/helpers_shared.py
+++ b/pymongo/helpers_shared.py
@@ -240,15 +240,6 @@ def _check_command_response(
         return
 
     details = response
-    # Mongos returns the error details in a 'raw' object
-    # for some errors.
-    if "raw" in response:
-        for shard in response["raw"].values():
-            # Grab the first non-empty raw error from a shard.
-            if shard.get("errmsg") and not shard.get("ok"):
-                details = shard
-                break
-
     errmsg = details["errmsg"]
     code = details.get("code")
 
diff --git a/test/asynchronous/test_database.py b/test/asynchronous/test_database.py
index 3afdc230ef..22213d6e8a 100644
--- a/test/asynchronous/test_database.py
+++ b/test/asynchronous/test_database.py
@@ -617,36 +617,6 @@ def test_command_response_without_ok(self):
         else:
             self.fail("_check_command_response didn't raise OperationFailure")
 
-    def test_mongos_response(self):
-        error_document = {
-            "ok": 0,
-            "errmsg": "outer",
-            "raw": {"shard0/host0,host1": {"ok": 0, "errmsg": "inner"}},
-        }
-
-        with self.assertRaises(OperationFailure) as context:
-            helpers_shared._check_command_response(error_document, None)
-
-        self.assertIn("inner", str(context.exception))
-
-        # If a shard has no primary and you run a command like dbstats, which
-        # cannot be run on a secondary, mongos's response includes empty "raw"
-        # errors. See SERVER-15428.
-        error_document = {"ok": 0, "errmsg": "outer", "raw": {"shard0/host0,host1": {}}}
-
-        with self.assertRaises(OperationFailure) as context:
-            helpers_shared._check_command_response(error_document, None)
-
-        self.assertIn("outer", str(context.exception))
-
-        # Raw error has ok: 0 but no errmsg. Not a known case, but test it.
-        error_document = {"ok": 0, "errmsg": "outer", "raw": {"shard0/host0,host1": {"ok": 0}}}
-
-        with self.assertRaises(OperationFailure) as context:
-            helpers_shared._check_command_response(error_document, None)
-
-        self.assertIn("outer", str(context.exception))
-
     @async_client_context.require_test_commands
     @async_client_context.require_no_mongos
     async def test_command_max_time_ms(self):
diff --git a/test/test_database.py b/test/test_database.py
index 20ac55b6eb..2f6c312f50 100644
--- a/test/test_database.py
+++ b/test/test_database.py
@@ -612,36 +612,6 @@ def test_command_response_without_ok(self):
         else:
             self.fail("_check_command_response didn't raise OperationFailure")
 
-    def test_mongos_response(self):
-        error_document = {
-            "ok": 0,
-            "errmsg": "outer",
-            "raw": {"shard0/host0,host1": {"ok": 0, "errmsg": "inner"}},
-        }
-
-        with self.assertRaises(OperationFailure) as context:
-            helpers_shared._check_command_response(error_document, None)
-
-        self.assertIn("inner", str(context.exception))
-
-        # If a shard has no primary and you run a command like dbstats, which
-        # cannot be run on a secondary, mongos's response includes empty "raw"
-        # errors. See SERVER-15428.
-        error_document = {"ok": 0, "errmsg": "outer", "raw": {"shard0/host0,host1": {}}}
-
-        with self.assertRaises(OperationFailure) as context:
-            helpers_shared._check_command_response(error_document, None)
-
-        self.assertIn("outer", str(context.exception))
-
-        # Raw error has ok: 0 but no errmsg. Not a known case, but test it.
-        error_document = {"ok": 0, "errmsg": "outer", "raw": {"shard0/host0,host1": {"ok": 0}}}
-
-        with self.assertRaises(OperationFailure) as context:
-            helpers_shared._check_command_response(error_document, None)
-
-        self.assertIn("outer", str(context.exception))
-
     @client_context.require_test_commands
     @client_context.require_no_mongos
     def test_command_max_time_ms(self):