diff --git a/apps/api/v2/package.json b/apps/api/v2/package.json
index 6b58fb0034..c460d1c22a 100644
--- a/apps/api/v2/package.json
+++ b/apps/api/v2/package.json
@@ -12,11 +12,11 @@
     "dev": "yarn workspace @calcom/platform-constants build:watch & yarn workspace @calcom/platform-utils build:watch & yarn workspace @calcom/platform-types build:watch & nest start --watch",
     "start:debug": "nest start --debug --watch",
     "start:prod": "node dist/main",
-    "test": "jest",
+    "test": "yarn workspace @calcom/platform-constants build && yarn workspace @calcom/platform-utils build && yarn workspace @calcom/platform-types build && jest",
     "test:watch": "jest --watch",
     "test:cov": "jest --coverage",
     "test:debug": "node --inspect-brk -r tsconfig-paths/register -r ts-node/register node_modules/.bin/jest --runInBand",
-    "test:e2e": "jest --config ./jest-e2e.json",
+    "test:e2e": "yarn workspace @calcom/platform-constants build && yarn workspace @calcom/platform-utils build && yarn workspace @calcom/platform-types build && jest --config ./jest-e2e.json",
     "prisma": "yarn workspace @calcom/prisma prisma",
     "generate-schemas": "yarn prisma generate && yarn prisma format"
   },
diff --git a/apps/api/v2/src/modules/auth/guards/access-token/token-expired.exception.ts b/apps/api/v2/src/modules/auth/guards/access-token/token-expired.exception.ts
new file mode 100644
index 0000000000..1e3f4eea83
--- /dev/null
+++ b/apps/api/v2/src/modules/auth/guards/access-token/token-expired.exception.ts
@@ -0,0 +1,9 @@
+import { HttpException } from "@nestjs/common";
+
+import { ACCESS_TOKEN_EXPIRED, HTTP_CODE_TOKEN_EXPIRED } from "@calcom/platform-constants";
+
+export class TokenExpiredException extends HttpException {
+  constructor() {
+    super(ACCESS_TOKEN_EXPIRED, HTTP_CODE_TOKEN_EXPIRED);
+  }
+}
diff --git a/apps/api/v2/src/modules/auth/strategies/access-token/access-token.strategy.ts b/apps/api/v2/src/modules/auth/strategies/access-token/access-token.strategy.ts
index 5f95bc3da5..fcec8ff50f 100644
--- a/apps/api/v2/src/modules/auth/strategies/access-token/access-token.strategy.ts
+++ b/apps/api/v2/src/modules/auth/strategies/access-token/access-token.strategy.ts
@@ -5,6 +5,8 @@ import { Injectable, UnauthorizedException } from "@nestjs/common";
 import { PassportStrategy } from "@nestjs/passport";
 import type { Request } from "express";
 
+import { INVALID_ACCESS_TOKEN } from "@calcom/platform-constants";
+
 class BaseStrategy {
   success!: (user: unknown) => void;
   error!: (error: Error) => void;
@@ -25,25 +27,21 @@ export class AccessTokenStrategy extends PassportStrategy(BaseStrategy, "access-
       const accessToken = request.get("Authorization")?.replace("Bearer ", "");
 
       if (!accessToken) {
-        throw new UnauthorizedException("Access token is missing or invalid.");
+        throw new UnauthorizedException(INVALID_ACCESS_TOKEN);
       }
 
-      const valid = this.oauthFlowService.validateAccessToken(accessToken);
-
-      if (!valid) {
-        throw new UnauthorizedException("Access token is missing or invalid.");
-      }
+      this.oauthFlowService.validateAccessToken(accessToken);
 
       const ownerId = await this.tokensRepository.getAccessTokenOwnerId(accessToken);
 
       if (!ownerId) {
-        throw new UnauthorizedException("Invalid access token");
+        throw new UnauthorizedException(INVALID_ACCESS_TOKEN);
       }
 
       const user = await this.userRepository.findById(ownerId);
 
       if (!user) {
-        throw new UnauthorizedException("User associated with the access token not found.");
+        throw new UnauthorizedException(INVALID_ACCESS_TOKEN);
       }
 
       return this.success(user);
diff --git a/apps/api/v2/src/modules/oauth-clients/services/oauth-flow.service.ts b/apps/api/v2/src/modules/oauth-clients/services/oauth-flow.service.ts
index 0011b5960b..2dd742cc23 100644
--- a/apps/api/v2/src/modules/oauth-clients/services/oauth-flow.service.ts
+++ b/apps/api/v2/src/modules/oauth-clients/services/oauth-flow.service.ts
@@ -1,7 +1,10 @@
+import { TokenExpiredException } from "@/modules/auth/guards/access-token/token-expired.exception";
 import { OAuthClientRepository } from "@/modules/oauth-clients/oauth-client.repository";
 import { TokensRepository } from "@/modules/tokens/tokens.repository";
 import { BadRequestException, Injectable, Logger, UnauthorizedException } from "@nestjs/common";
 
+import { INVALID_ACCESS_TOKEN } from "@calcom/platform-constants";
+
 @Injectable()
 export class OAuthFlowService {
   private logger = new Logger("OAuthFlowService");
@@ -29,11 +32,11 @@ export class OAuthFlowService {
     const tokenExpiresAt = await this.tokensRepository.getAccessTokenExpiryDate(secret);
 
     if (!tokenExpiresAt) {
-      throw new UnauthorizedException("Access token is invalid or not found");
+      throw new UnauthorizedException(INVALID_ACCESS_TOKEN);
     }
 
     if (new Date() > tokenExpiresAt) {
-      throw new BadRequestException("Token is expired");
+      throw new TokenExpiredException();
     }
 
     return true;
diff --git a/packages/platform/constants/api.ts b/packages/platform/constants/api.ts
index fd01b1dab5..aa7ab64c89 100644
--- a/packages/platform/constants/api.ts
+++ b/packages/platform/constants/api.ts
@@ -7,6 +7,8 @@ export const FORBIDDEN = "FORBIDDEN";
 export const NOT_FOUND = "NOT_FOUND";
 export const METHOD_NOT_ALLOWED = "METHOD_NOT_ALLOWED";
 export const UNPROCESSABLE_ENTITY = "UNPROCESSABLE_ENTITY";
+export const ACCESS_TOKEN_EXPIRED = "ACCESS_TOKEN_IS_EXPIRED";
+export const INVALID_ACCESS_TOKEN = "Invalid Access Token.";
 
 // Server Errors (5xx)
 export const INTERNAL_SERVER_ERROR = "INTERNAL_SERVER_ERROR";
@@ -35,3 +37,6 @@ export const API_ERROR_CODES = [
 
 // Request headers
 export const X_CAL_SECRET_KEY = "x-cal-secret-key";
+
+// HTTP status codes
+export const HTTP_CODE_TOKEN_EXPIRED = 498;