diff --git a/lib/codex-manager.ts b/lib/codex-manager.ts
index d413d116..4ed0bea2 100644
--- a/lib/codex-manager.ts
+++ b/lib/codex-manager.ts
@@ -36,6 +36,7 @@ import {
 	loadCodexCliState,
 } from "./codex-cli/state.js";
 import { setCodexCliActiveSelection } from "./codex-cli/writer.js";
+import { runCheckCommand } from "./codex-manager/commands/check.js";
 import {
 	runFeaturesCommand,
 	runStatusCommand,
@@ -5547,8 +5548,7 @@ export async function runCodexMultiAuthCli(rawArgs: string[]): Promise<number> {
 		return runSwitch(rest);
 	}
 	if (command === "check") {
-		await runHealthCheck({ liveProbe: true });
-		return 0;
+		return runCheckCommand({ runHealthCheck });
 	}
 	if (command === "features") {
 		return runFeaturesReport();
diff --git a/lib/codex-manager/commands/check.ts b/lib/codex-manager/commands/check.ts
new file mode 100644
index 00000000..69a8dc93
--- /dev/null
+++ b/lib/codex-manager/commands/check.ts
@@ -0,0 +1,8 @@
+export interface CheckCommandDeps {
+	runHealthCheck: (options: { liveProbe: boolean }) => Promise<void>;
+}
+
+export async function runCheckCommand(deps: CheckCommandDeps): Promise<number> {
+	await deps.runHealthCheck({ liveProbe: true });
+	return 0;
+}
diff --git a/test/codex-manager-check-command.test.ts b/test/codex-manager-check-command.test.ts
new file mode 100644
index 00000000..ecd753ab
--- /dev/null
+++ b/test/codex-manager-check-command.test.ts
@@ -0,0 +1,32 @@
+import { describe, expect, it, vi } from "vitest";
+import {
+	type CheckCommandDeps,
+	runCheckCommand,
+} from "../lib/codex-manager/commands/check.js";
+
+describe("runCheckCommand", () => {
+	it("runs health check with live probing enabled", async () => {
+		const deps: CheckCommandDeps = {
+			runHealthCheck: vi.fn(async () => undefined),
+		};
+
+		const result = await runCheckCommand(deps);
+
+		expect(result).toBe(0);
+		expect(deps.runHealthCheck).toHaveBeenCalledTimes(1);
+		expect(deps.runHealthCheck).toHaveBeenCalledWith({ liveProbe: true });
+	});
+
+	it("propagates rejection from runHealthCheck", async () => {
+		const error = new Error("probe failed");
+		const deps: CheckCommandDeps = {
+			runHealthCheck: vi.fn(async () => {
+				throw error;
+			}),
+		};
+
+		await expect(runCheckCommand(deps)).rejects.toThrow("probe failed");
+		expect(deps.runHealthCheck).toHaveBeenCalledTimes(1);
+		expect(deps.runHealthCheck).toHaveBeenCalledWith({ liveProbe: true });
+	});
+});