diff --git a/b2/_internal/b2v3/registry.py b/b2/_internal/b2v3/registry.py
index 39998db3..2f9ac252 100644
--- a/b2/_internal/b2v3/registry.py
+++ b/b2/_internal/b2v3/registry.py
@@ -13,6 +13,7 @@
 from b2._internal._cli.b2api import _get_b2api_for_profile
 from b2._internal.arg_parser import enable_camel_case_arguments
 from .rm import Rm
+from .sync import Sync
 
 enable_camel_case_arguments()
 
diff --git a/b2/_internal/b2v3/sync.py b/b2/_internal/b2v3/sync.py
new file mode 100644
index 00000000..b07c6539
--- /dev/null
+++ b/b2/_internal/b2v3/sync.py
@@ -0,0 +1,16 @@
+######################################################################
+#
+# File: b2/_internal/b2v3/sync.py
+#
+# Copyright 2024 Backblaze Inc. All Rights Reserved.
+#
+# License https://www.backblaze.com/using_b2_code.html
+#
+######################################################################
+
+from b2._internal.b2v4.registry import Sync as SyncV4
+
+
+class Sync(SyncV4):
+    __doc__ = SyncV4.__doc__
+    FAIL_ON_REPORTER_ERRORS_OR_WARNINGS = False
diff --git a/b2/_internal/console_tool.py b/b2/_internal/console_tool.py
index 0ecc0601..881427eb 100644
--- a/b2/_internal/console_tool.py
+++ b/b2/_internal/console_tool.py
@@ -2972,6 +2972,8 @@ class Sync(
     DEFAULT_DOWNLOAD_THREADS = 10
     DEFAULT_UPLOAD_THREADS = 10
 
+    FAIL_ON_REPORTER_ERRORS_OR_WARNINGS = True
+
     @classmethod
     def _setup_parser(cls, parser):
         add_normalized_argument(parser, '--no-progress', action='store_true')
@@ -3089,6 +3091,8 @@ def _run(self, args):
                 raise CommandError(f'{ex.path} is not a directory')
             except UnableToCreateDirectory as ex:
                 raise CommandError(f'unable to create directory {ex.path}')
+            if self.FAIL_ON_REPORTER_ERRORS_OR_WARNINGS and reporter.has_errors_or_warnings():
+                return 1
         return 0
 
     def get_policies_manager_from_args(self, args):
diff --git a/changelog.d/+sync-status-code.changed.md b/changelog.d/+sync-status-code.changed.md
new file mode 100644
index 00000000..7f376745
--- /dev/null
+++ b/changelog.d/+sync-status-code.changed.md
@@ -0,0 +1 @@
+Changed `sync` command exit status code from 0 to 1 if any warnings or errors were encountered during the operation.
\ No newline at end of file