diff --git a/aider/coders/base_coder.py b/aider/coders/base_coder.py
index 00151de74..9db3318bc 100755
--- a/aider/coders/base_coder.py
+++ b/aider/coders/base_coder.py
@@ -40,6 +40,7 @@ def wrap_fence(name):
 
 
 class Coder:
+    client = None
     abs_fnames = None
     repo = None
     last_aider_commit_hash = None
@@ -479,6 +480,7 @@ class Coder:
         except ExhaustedContextWindow:
             exhausted = True
         except openai.BadRequestError as err:
+            dump(err)
             if "maximum context length" in str(err):
                 exhausted = True
             else:
diff --git a/aider/sendchat.py b/aider/sendchat.py
index a1b5b767d..9419de7b9 100644
--- a/aider/sendchat.py
+++ b/aider/sendchat.py
@@ -6,13 +6,9 @@ import openai
 import requests
 
 # from diskcache import Cache
-from openai import (
-    APIConnectionError,
-    APIError,
-    InternalServerError,
-    RateLimitError,
-    Timeout,
-)
+from openai import APIConnectionError, InternalServerError, RateLimitError
+
+from aider.dump import dump  # noqa: F401
 
 CACHE_PATH = "~/.aider.send.cache.v1"
 CACHE = None
@@ -22,8 +18,6 @@ CACHE = None
 @backoff.on_exception(
     backoff.expo,
     (
-        Timeout,
-        APIError,
         InternalServerError,
         RateLimitError,
         APIConnectionError,
diff --git a/tests/test_coder.py b/tests/test_coder.py
index 4d1d50319..bcc4c7446 100644
--- a/tests/test_coder.py
+++ b/tests/test_coder.py
@@ -331,18 +331,21 @@ class TestCoder(unittest.TestCase):
         # both files should still be here
         self.assertEqual(len(coder.abs_fnames), 2)
 
-    @patch("aider.coders.base_coder.openai.ChatCompletion.create")
-    def test_run_with_invalid_request_error(self, mock_chat_completion_create):
+    def test_run_with_invalid_request_error(self):
         with ChdirTemporaryDirectory():
             # Mock the IO object
             mock_io = MagicMock()
 
-            # Initialize the Coder object with the mocked IO and mocked repo
-            coder = Coder.create(models.GPT4, None, mock_io)
+            mock_client = MagicMock()
 
-            # Set up the mock to raise InvalidRequestError
-            mock_chat_completion_create.side_effect = openai.BadRequestError(
-                "Invalid request", "param"
+            # Initialize the Coder object with the mocked IO and mocked repo
+            coder = Coder.create(models.GPT4, None, mock_io, client=mock_client)
+
+            # Set up the mock to raise
+            mock_client.chat.completions.create.side_effect = openai.BadRequestError(
+                message="Invalid request",
+                response=MagicMock(),
+                body=None,
             )
 
             # Call the run method and assert that InvalidRequestError is raised