diff --git a/YELLO-iOS/YELLO-iOS/Network/Base/APIRequestLoader.swift b/YELLO-iOS/YELLO-iOS/Network/Base/APIRequestLoader.swift
index 8ffdb5bb..7c8ec973 100644
--- a/YELLO-iOS/YELLO-iOS/Network/Base/APIRequestLoader.swift
+++ b/YELLO-iOS/YELLO-iOS/Network/Base/APIRequestLoader.swift
@@ -55,9 +55,9 @@ class APIRequestLoader<T: TargetType> {
     
     private func judgeStatus<M: Decodable>(by statusCode: Int, _ data: Data, type: M.Type) -> NetworkResult<M> {
         switch statusCode {
-        case 200...299: return isValidData(data: data, type: M.self)
-        case 400, 402...499: return isValidData(data: data, type: M.self)
-        case 500: return .serverErr
+        case 200...299, 403, 404: return isValidData(data: data, type: M.self)
+        case 400, 402, 405...499: return .requestErr(statusCode: statusCode)
+        case 500: return .serverErr(statusCode: statusCode)
         case 401: return .failure
         default: return .networkErr
         }
diff --git a/YELLO-iOS/YELLO-iOS/Network/Base/NetworkResult.swift b/YELLO-iOS/YELLO-iOS/Network/Base/NetworkResult.swift
index f6f989d7..75595081 100644
--- a/YELLO-iOS/YELLO-iOS/Network/Base/NetworkResult.swift
+++ b/YELLO-iOS/YELLO-iOS/Network/Base/NetworkResult.swift
@@ -9,9 +9,9 @@ import Foundation
 
 enum NetworkResult<T> {
     case success(T)     // 서버 통신 성공
-    case requestErr(T)  // 요청에러 발생
+    case requestErr(statusCode: Int)  // 요청에러 발생
     case pathErr // 경로 에러
-    case serverErr  // 서버 내부 에러
+    case serverErr(statusCode: Int)  // 서버 내부 에러
     case networkErr // 네트워크 연결 실패
     case failure // 실패
 }
diff --git a/YELLO-iOS/YELLO-iOS/Presentation/Onboarding/ViewController/RecommendIdViewController.swift b/YELLO-iOS/YELLO-iOS/Presentation/Onboarding/ViewController/RecommendIdViewController.swift
index 64d02943..8b936f9a 100644
--- a/YELLO-iOS/YELLO-iOS/Presentation/Onboarding/ViewController/RecommendIdViewController.swift
+++ b/YELLO-iOS/YELLO-iOS/Presentation/Onboarding/ViewController/RecommendIdViewController.swift
@@ -169,6 +169,14 @@ class RecommendIdViewController: OnboardingBaseViewController {
                 Amplitude.instance().setUserProperties(userProperties)
                 self.didPostUserInfo = true
                 self.navigationController?.pushViewController(pushViewController, animated: false)
+            case .requestErr(let statusCode):
+              self.view.showToast(message: "오류가 발생했습니다. code: \(statusCode)", at: 180.adjusted)
+            case .serverErr(let statusCode):
+              self.view.showToast(message: "오류가 발생했습니다. code: \(statusCode)", at: 180.adjusted)
+              let sceneDelegate = UIApplication.shared.connectedScenes.first?.delegate as! SceneDelegate
+              kakaoLoginViewController.isFromOnboarding = true
+              sceneDelegate.window?.rootViewController = UINavigationController(rootViewController: kakaoLoginViewController)
+              return
             default:
                 self.isFail = true
                 self.view.showToast(message: "오류가 발생했습니다. 잠시후 다시 시도해주세요.")