diff --git a/vehicle-data-platform/apps/web/src/pages/Dashboard.tsx b/vehicle-data-platform/apps/web/src/pages/Dashboard.tsx
index 9901bdcc..1f147216 100644
--- a/vehicle-data-platform/apps/web/src/pages/Dashboard.tsx
+++ b/vehicle-data-platform/apps/web/src/pages/Dashboard.tsx
@@ -63,6 +63,28 @@ function sourceEvidenceText(row: { onlineSourceCount: number; sourceCount: numbe
   return `${row.onlineSourceCount}/${row.sourceCount} 来源在线`;
 }
 
+function sourceConsistencyAction(row: VehicleCoverageRow, onFilter: (filters: Record<string, string>) => void) {
+  const consistency = row.sourceConsistency;
+  if (!consistency) {
+    return <Tag color="grey">未诊断</Tag>;
+  }
+  const color = consistency.severity === 'ok' ? 'green' as const : consistency.severity === 'error' ? 'red' as const : 'orange' as const;
+  const label = consistency.title || consistency.status;
+  if ((consistency.missingProtocols ?? []).length > 0) {
+    return (
+      <Button
+        size="small"
+        theme="light"
+        type={color === 'red' ? 'danger' : color === 'orange' ? 'warning' : 'primary'}
+        onClick={() => onFilter({ serviceStatus: 'degraded', missingProtocol: consistency.missingProtocols[0] })}
+      >
+        {label}
+      </Button>
+    );
+  }
+  return <Tag color={color}>{label}</Tag>;
+}
+
 export function Dashboard({ onOpenVehicle, onOpenQuality, onOpenVehicles }: { onOpenVehicle: (vin: string, protocol?: string) => void; onOpenQuality: () => void; onOpenVehicles: (filters?: Record<string, string>) => void }) {
   const [summary, setSummary] = useState<DashboardSummary | null>(null);
   const [serviceSummary, setServiceSummary] = useState<VehicleServiceSummary | null>(null);
@@ -315,6 +337,11 @@ export function Dashboard({ onOpenVehicle, onOpenQuality, onOpenVehicles }: { on
                   return <Tag color={status.color}>{status.label}</Tag>;
                 }
               },
+              {
+                title: '来源一致性',
+                width: 140,
+                render: (_: unknown, row: VehicleCoverageRow) => sourceConsistencyAction(row, loadCoverage)
+              },
               { title: '在线', width: 90, render: (_: unknown, row: VehicleCoverageRow) => <StatusTag status={row.online ? 'ok' : 'offline'} /> },
               { title: '绑定', width: 90, render: (_: unknown, row: VehicleCoverageRow) => <Tag color={row.bindingStatus === 'bound' ? 'green' : 'orange'}>{row.bindingStatus === 'bound' ? '已绑定' : '未绑定'}</Tag> },
               { title: '最后时间', dataIndex: 'lastSeen', width: 170 },
diff --git a/vehicle-data-platform/apps/web/src/test/App.test.tsx b/vehicle-data-platform/apps/web/src/test/App.test.tsx
index 02abe51c..8af3db0b 100644
--- a/vehicle-data-platform/apps/web/src/test/App.test.tsx
+++ b/vehicle-data-platform/apps/web/src/test/App.test.tsx
@@ -788,6 +788,115 @@ test('shows row service status in dashboard vehicle previews', async () => {
   expect(screen.getByText('实时车辆离线')).toBeInTheDocument();
 });
 
+test('filters dashboard coverage from source consistency diagnosis', async () => {
+  window.history.replaceState(null, '', '/#/dashboard');
+  const fetchMock = vi.spyOn(globalThis, 'fetch').mockImplementation(async (input) => {
+    const path = String(input);
+    if (path.includes('/api/dashboard/summary')) {
+      return {
+        ok: true,
+        json: async () => ({
+          data: {
+            onlineVehicles: 3,
+            activeToday: 4,
+            frameToday: 1286320,
+            issueVehicles: 7,
+            kafkaLag: 0,
+            protocols: [],
+            serviceStatuses: [],
+            linkHealth: []
+          },
+          traceId: 'trace-test',
+          timestamp: 1783094400000
+        })
+      } as Response;
+    }
+    if (path.includes('/api/vehicle-service/summary')) {
+      return {
+        ok: true,
+        json: async () => ({
+          data: {
+            totalVehicles: 1,
+            boundVehicles: 1,
+            onlineVehicles: 1,
+            singleSourceVehicles: 1,
+            multiSourceVehicles: 0,
+            noDataVehicles: 0,
+            identityRequiredVehicles: 0,
+            serviceStatuses: [],
+            protocols: [],
+            missingSources: []
+          },
+          traceId: 'trace-test',
+          timestamp: 1783094400000
+        })
+      } as Response;
+    }
+    if (path.includes('/api/vehicles/coverage')) {
+      return {
+        ok: true,
+        json: async () => ({
+          data: {
+            items: [{
+              vin: 'VIN-DASH-SINGLE',
+              plate: '粤A总览',
+              phone: '',
+              oem: '',
+              protocols: ['GB32960'],
+              missingProtocols: ['JT808', 'YUTONG_MQTT'],
+              sourceCount: 1,
+              onlineSourceCount: 1,
+              online: true,
+              lastSeen: '2026-07-04 07:15:28',
+              bindingStatus: 'bound',
+              sourceConsistency: {
+                sourceCount: 1,
+                onlineSourceCount: 1,
+                locatedSourceCount: 0,
+                missingProtocols: ['JT808', 'YUTONG_MQTT'],
+                mileageDeltaKm: 0,
+                sourceTimeDeltaSeconds: 0,
+                scope: 'coverage',
+                status: 'single_source',
+                severity: 'warning',
+                title: '单一来源',
+                detail: '当前车辆只有一个数据来源，无法做跨来源一致性校验。'
+              }
+            }],
+            total: 1,
+            limit: 8,
+            offset: 0
+          },
+          traceId: 'trace-test',
+          timestamp: 1783094400000
+        })
+      } as Response;
+    }
+    return {
+      ok: true,
+      json: async () => ({
+        data: path.includes('/api/ops/health')
+          ? { linkHealth: [], kafkaLag: 0, redisOnlineKeys: 0, tdengineWritable: true, mysqlWritable: true, runtime: { requestTimeoutMs: 5000 } }
+          : { items: [], total: 0, limit: 8, offset: 0 },
+        traceId: 'trace-test',
+        timestamp: 1783094400000
+      })
+    } as Response;
+  });
+
+  render(<App />);
+
+  expect(await screen.findByText('VIN-DASH-SINGLE')).toBeInTheDocument();
+  expect(screen.getByText('来源一致性')).toBeInTheDocument();
+  fireEvent.click(screen.getByRole('button', { name: '单一来源' }));
+
+  await waitFor(() => {
+    expect(fetchMock).toHaveBeenCalledWith(expect.stringContaining('serviceStatus=degraded'), undefined);
+  });
+  expect(fetchMock).toHaveBeenCalledWith(expect.stringContaining('missingProtocol=JT808'), undefined);
+  expect(screen.getByText('当前筛选：来源异常 / 缺 JT808')).toBeInTheDocument();
+});
+
 test('opens vehicle service from dashboard realtime preview with source evidence', async () => {
   window.history.replaceState(null, '', '/#/dashboard');
   vi.spyOn(globalThis, 'fetch').mockImplementation(async (input) => {