diff --git a/cloud-modules/cloud-modules-breakdown/src/main/java/com/muyu/breakdown/controller/SysCarFaultController.java b/cloud-modules/cloud-modules-breakdown/src/main/java/com/muyu/breakdown/controller/SysCarFaultController.java
index 983d354..042dd97 100644
--- a/cloud-modules/cloud-modules-breakdown/src/main/java/com/muyu/breakdown/controller/SysCarFaultController.java
+++ b/cloud-modules/cloud-modules-breakdown/src/main/java/com/muyu/breakdown/controller/SysCarFaultController.java
@@ -72,9 +72,11 @@ public class SysCarFaultController extends BaseController
     public Result<Integer> add(
             @Validated @RequestBody SysCarFault sysCarFault)
     {
-        List<SysCarFault> sysCarFaults = sysCarFaultService.selectFaultByFaultCode(sysCarFault.getFaultCode());
-
 
+        SysCarFault selectFaultByFaultCode = sysCarFaultService.selectFaultByFaultCode(sysCarFault.getFaultCode());
+        if (selectFaultByFaultCode!=null){
+            return error("新增 车辆故障管理 ,失败");
+        }
 
         if (sysCarFaultService.checkIdUnique(sysCarFault)) {
             return error("新增 车辆故障管理 ,失败");
diff --git a/cloud-modules/cloud-modules-breakdown/src/main/java/com/muyu/breakdown/mapper/SysCarFaultMapper.java b/cloud-modules/cloud-modules-breakdown/src/main/java/com/muyu/breakdown/mapper/SysCarFaultMapper.java
index e26ac49..14a9953 100644
--- a/cloud-modules/cloud-modules-breakdown/src/main/java/com/muyu/breakdown/mapper/SysCarFaultMapper.java
+++ b/cloud-modules/cloud-modules-breakdown/src/main/java/com/muyu/breakdown/mapper/SysCarFaultMapper.java
@@ -16,6 +16,6 @@ import java.util.List;
 @Mapper
 public interface SysCarFaultMapper extends BaseMapper<SysCarFault>{
 
-    @Select("select fault_code from sys_car_fault where fault_code=#{}")
-    List<SysCarFault>selectFaultByFaultCode(String faultCode);
+    @Select("select fault_code from sys_car_fault where fault_code=#{faultCode}")
+     SysCarFault selectFaultByFaultCode(String faultCode);
 }
diff --git a/cloud-modules/cloud-modules-breakdown/src/main/java/com/muyu/breakdown/service/SysCarFaultService.java b/cloud-modules/cloud-modules-breakdown/src/main/java/com/muyu/breakdown/service/SysCarFaultService.java
index ad2aa41..8085e2f 100644
--- a/cloud-modules/cloud-modules-breakdown/src/main/java/com/muyu/breakdown/service/SysCarFaultService.java
+++ b/cloud-modules/cloud-modules-breakdown/src/main/java/com/muyu/breakdown/service/SysCarFaultService.java
@@ -36,7 +36,7 @@ public interface SysCarFaultService extends IService<SysCarFault> {
     Boolean checkIdUnique(SysCarFault sysCarFault);
 
 
-    List<SysCarFault>selectFaultByFaultCode(String faultCode);
+    SysCarFault selectFaultByFaultCode(String faultCode);
 
 
 
diff --git a/cloud-modules/cloud-modules-breakdown/src/main/java/com/muyu/breakdown/service/impl/SysCarFaultServiceImpl.java b/cloud-modules/cloud-modules-breakdown/src/main/java/com/muyu/breakdown/service/impl/SysCarFaultServiceImpl.java
index bcf23ff..6450189 100644
--- a/cloud-modules/cloud-modules-breakdown/src/main/java/com/muyu/breakdown/service/impl/SysCarFaultServiceImpl.java
+++ b/cloud-modules/cloud-modules-breakdown/src/main/java/com/muyu/breakdown/service/impl/SysCarFaultServiceImpl.java
@@ -75,13 +75,13 @@ public class SysCarFaultServiceImpl
     @Override
     public Boolean checkIdUnique(SysCarFault sysCarFault) {
         LambdaQueryWrapper<SysCarFault> queryWrapper = new LambdaQueryWrapper<>();
-        queryWrapper.eq(SysCarFault::getId, sysCarFault.getId());
 
+        queryWrapper.eq(SysCarFault::getId, sysCarFault.getId());
         return this.count(queryWrapper) == 0;
     }
 
     @Override
-    public List<SysCarFault> selectFaultByFaultCode(String faultCode) {
+    public SysCarFault selectFaultByFaultCode(String faultCode) {
         return mapper.selectFaultByFaultCode(faultCode);
     }