diff --git a/packages/connector-wechat-native/src/index.test.ts b/packages/connector-wechat-native/src/index.test.ts
index 827673cfe..8e023f1f5 100644
--- a/packages/connector-wechat-native/src/index.test.ts
+++ b/packages/connector-wechat-native/src/index.test.ts
@@ -57,15 +57,25 @@ describe('getAccessToken', () => {
     expect(openid).toEqual('openid');
   });
 
-  it('throws SocialAuthCodeInvalid error if accessToken not found in response', async () => {
+  it('throws SocialAuthCodeInvalid error if errcode is 40029', async () => {
     nock(accessTokenEndpointUrl.origin)
       .get(accessTokenEndpointUrl.pathname)
       .query(parameters)
-      .reply(200, {});
+      .reply(200, { errcode: 40_029, errmsg: 'invalid code' });
     await expect(weChatNativeMethods.getAccessToken('code')).rejects.toMatchError(
       new ConnectorError(ConnectorErrorCodes.SocialAuthCodeInvalid)
     );
   });
+
+  it('throws error if errcode is neither 40029 nor undefined', async () => {
+    nock(accessTokenEndpointUrl.origin)
+      .get(accessTokenEndpointUrl.pathname)
+      .query(true)
+      .reply(200, { errcode: 40_163, errmsg: 'invalid code' });
+    await expect(weChatNativeMethods.getAccessToken('wrong_code')).rejects.toMatchError(
+      new Error('invalid code')
+    );
+  });
 });
 
 describe('validateConfig', () => {
@@ -140,15 +150,16 @@ describe('getUserInfo', () => {
   });
 
   it('throws error if `openid` is missing', async () => {
-    nock.cleanAll();
-    nock(userInfoEndpointUrl.origin).get(userInfoEndpointUrl.pathname).query(parameters).reply(0, {
-      unionid: 'this_is_an_arbitrary_wechat_union_id',
-      headimgurl: 'https://github.com/images/error/octocat_happy.gif',
-      nickname: 'wechat bot',
-    });
     nockNoOpenIdAccessTokenResponse();
+    nock(userInfoEndpointUrl.origin)
+      .get(userInfoEndpointUrl.pathname)
+      .query(parameters)
+      .reply(200, {
+        errcode: 41_009,
+        errmsg: 'missing openid',
+      });
     await expect(weChatNativeMethods.getUserInfo({ code: 'code' })).rejects.toMatchError(
-      new ConnectorError(ConnectorErrorCodes.SocialAuthCodeInvalid)
+      new Error('missing openid')
     );
   });
 
@@ -156,7 +167,7 @@ describe('getUserInfo', () => {
     nock(userInfoEndpointUrl.origin)
       .get(userInfoEndpointUrl.pathname)
       .query(parameters)
-      .reply(200, { errcode: 40_001 });
+      .reply(200, { errcode: 40_001, errmsg: 'invalid credential' });
     await expect(weChatNativeMethods.getUserInfo({ code: 'code' })).rejects.toMatchError(
       new ConnectorError(ConnectorErrorCodes.SocialAccessTokenInvalid)
     );
diff --git a/packages/connector-wechat-native/src/index.ts b/packages/connector-wechat-native/src/index.ts
index c23bcccf8..c8c11fcfd 100644
--- a/packages/connector-wechat-native/src/index.ts
+++ b/packages/connector-wechat-native/src/index.ts
@@ -31,9 +31,6 @@ import {
   WeChatNativeConfig,
 } from './types';
 
-// As creating a WeChat Web/Mobile application needs a real App or Website record, the real test is temporarily not finished.
-// TODO: test with our own wechat mobile/web application (LOG-1910), already tested with other verified wechat web application
-
 export default class WeChatNativeConnector implements SocialConnector {
   public metadata: ConnectorMetadata = defaultMetadata;
 
@@ -68,6 +65,7 @@ export default class WeChatNativeConnector implements SocialConnector {
       access_token: accessToken,
       openid,
       errcode,
+      errmsg,
     } = await got
       .get(accessTokenEndpoint, {
         searchParams: { appid, secret, code, grant_type: 'authorization_code' },
@@ -75,10 +73,8 @@ export default class WeChatNativeConnector implements SocialConnector {
       })
       .json<AccessTokenResponse>();
 
-    assert(
-      errcode !== 40_029 && accessToken && openid,
-      new ConnectorError(ConnectorErrorCodes.SocialAuthCodeInvalid)
-    );
+    assert(errcode !== 40_029, new ConnectorError(ConnectorErrorCodes.SocialAuthCodeInvalid));
+    assert(!errcode && accessToken && openid, new Error(errmsg ?? ''));
 
     return { accessToken, openid };
   };
@@ -87,15 +83,6 @@ export default class WeChatNativeConnector implements SocialConnector {
     const { code } = codeDataGuard.parse(data);
     const { accessToken, openid } = await this.getAccessToken(code);
 
-    // TO-DO: @Darcy refactor this
-    // 'openid' is defined as a required input argument in WeChat API doc, but it does not necessarily have to
-    // be the return value from getAccessToken per testing.
-    // In other words, 'openid' is required but the response of getUserInfo is consistent as long as
-    // access_token is valid.
-    // We are expecting to get 41009 'missing openid' response according to the developers doc, but the
-    // fact is that we still got 40001 'invalid credentials' response.
-    assert(openid, new Error('`openid` is required by WeChat API.'));
-
     try {
       const { unionid, headimgurl, nickname, errcode, errmsg } = await got
         .get(userInfoEndpoint, {
diff --git a/packages/connector-wechat-native/src/types.ts b/packages/connector-wechat-native/src/types.ts
index fec54ed7f..55412d6ac 100644
--- a/packages/connector-wechat-native/src/types.ts
+++ b/packages/connector-wechat-native/src/types.ts
@@ -15,6 +15,7 @@ export type AccessTokenResponse = {
   refresh_token?: string;
   scope?: string;
   errcode?: number;
+  errmsg?: string;
 };
 
 export type UserInfoResponse = {
diff --git a/packages/connector-wechat/src/index.test.ts b/packages/connector-wechat/src/index.test.ts
index d9630f533..72c19892f 100644
--- a/packages/connector-wechat/src/index.test.ts
+++ b/packages/connector-wechat/src/index.test.ts
@@ -57,15 +57,25 @@ describe('getAccessToken', () => {
     expect(openid).toEqual('openid');
   });
 
-  it('throws SocialAuthCodeInvalid error if accessToken not found in response', async () => {
+  it('throws SocialAuthCodeInvalid error if errcode is 40029', async () => {
     nock(accessTokenEndpointUrl.origin)
       .get(accessTokenEndpointUrl.pathname)
       .query(parameters)
-      .reply(200, {});
+      .reply(200, { errcode: 40_029, errmsg: 'invalid code' });
     await expect(weChatMethods.getAccessToken('code')).rejects.toMatchError(
       new ConnectorError(ConnectorErrorCodes.SocialAuthCodeInvalid)
     );
   });
+
+  it('throws error if errcode is neither 40029 nor undefined', async () => {
+    nock(accessTokenEndpointUrl.origin)
+      .get(accessTokenEndpointUrl.pathname)
+      .query(true)
+      .reply(200, { errcode: 40_163, errmsg: 'invalid code' });
+    await expect(weChatMethods.getAccessToken('wrong_code')).rejects.toMatchError(
+      new Error('invalid code')
+    );
+  });
 });
 
 describe('validateConfig', () => {
@@ -84,18 +94,9 @@ describe('validateConfig', () => {
 
 const nockNoOpenIdAccessTokenResponse = () => {
   const accessTokenEndpointUrl = new URL(accessTokenEndpoint);
-  const parameters = new URLSearchParams({
-    appid: '<app-id>',
-    secret: '<app-secret>',
-    code: 'code',
-    grant_type: 'authorization_code',
+  nock(accessTokenEndpointUrl.origin).get(accessTokenEndpointUrl.pathname).query(true).reply(200, {
+    access_token: 'access_token',
   });
-  nock(accessTokenEndpointUrl.origin)
-    .get(accessTokenEndpointUrl.pathname)
-    .query(parameters)
-    .reply(200, {
-      access_token: 'access_token',
-    });
 };
 
 describe('getUserInfo', () => {
@@ -107,6 +108,7 @@ describe('getUserInfo', () => {
       code: 'code',
       grant_type: 'authorization_code',
     });
+
     nock(accessTokenEndpointUrl.origin)
       .get(accessTokenEndpointUrl.pathname)
       .query(parameters)
@@ -141,15 +143,16 @@ describe('getUserInfo', () => {
   });
 
   it('throws error if `openid` is missing', async () => {
-    nock.cleanAll();
-    nock(userInfoEndpointUrl.origin).get(userInfoEndpointUrl.pathname).query(parameters).reply(0, {
-      unionid: 'this_is_an_arbitrary_wechat_union_id',
-      headimgurl: 'https://github.com/images/error/octocat_happy.gif',
-      nickname: 'wechat bot',
-    });
     nockNoOpenIdAccessTokenResponse();
+    nock(userInfoEndpointUrl.origin)
+      .get(userInfoEndpointUrl.pathname)
+      .query(parameters)
+      .reply(200, {
+        errcode: 41_009,
+        errmsg: 'missing openid',
+      });
     await expect(weChatMethods.getUserInfo({ code: 'code' })).rejects.toMatchError(
-      new ConnectorError(ConnectorErrorCodes.SocialAuthCodeInvalid)
+      new Error('missing openid')
     );
   });
 
@@ -157,7 +160,7 @@ describe('getUserInfo', () => {
     nock(userInfoEndpointUrl.origin)
       .get(userInfoEndpointUrl.pathname)
       .query(parameters)
-      .reply(200, { errcode: 40_001 });
+      .reply(200, { errcode: 40_001, errmsg: 'invalid credential' });
     await expect(weChatMethods.getUserInfo({ code: 'code' })).rejects.toMatchError(
       new ConnectorError(ConnectorErrorCodes.SocialAccessTokenInvalid)
     );
diff --git a/packages/connector-wechat/src/index.ts b/packages/connector-wechat/src/index.ts
index 51012a0c5..9564833dd 100644
--- a/packages/connector-wechat/src/index.ts
+++ b/packages/connector-wechat/src/index.ts
@@ -28,7 +28,7 @@ import {
 import { weChatConfigGuard, AccessTokenResponse, UserInfoResponse, WeChatConfig } from './types';
 
 // As creating a WeChat Web/Mobile application needs a real App or Website record, the real test is temporarily not finished.
-// TODO: test with our own wechat mobile/web application (LOG-1910), already tested with other verified wechat web application
+// TODO: test with our own WeChat web application (LOG-2719), already tested with other verified WeChat web application
 
 export default class WeChatConnector implements SocialConnector {
   public metadata: ConnectorMetadata = defaultMetadata;
@@ -64,6 +64,7 @@ export default class WeChatConnector implements SocialConnector {
       access_token: accessToken,
       openid,
       errcode,
+      errmsg,
     } = await got
       .get(accessTokenEndpoint, {
         searchParams: { appid, secret, code, grant_type: 'authorization_code' },
@@ -71,10 +72,8 @@ export default class WeChatConnector implements SocialConnector {
       })
       .json<AccessTokenResponse>();
 
-    assert(
-      errcode !== 40_029 && accessToken && openid,
-      new ConnectorError(ConnectorErrorCodes.SocialAuthCodeInvalid)
-    );
+    assert(errcode !== 40_029, new ConnectorError(ConnectorErrorCodes.SocialAuthCodeInvalid));
+    assert(!errcode && accessToken && openid, new Error(errmsg ?? ''));
 
     return { accessToken, openid };
   };
@@ -83,15 +82,6 @@ export default class WeChatConnector implements SocialConnector {
     const { code } = codeDataGuard.parse(data);
     const { accessToken, openid } = await this.getAccessToken(code);
 
-    // TO-DO: @Darcy refactor this
-    // 'openid' is defined as a required input argument in WeChat API doc, but it does not necessarily have to
-    // be the return value from getAccessToken per testing.
-    // In other words, 'openid' is required but the response of getUserInfo is consistent as long as
-    // access_token is valid.
-    // We are expecting to get 41009 'missing openid' response according to the developers doc, but the
-    // fact is that we still got 40001 'invalid credentials' response.
-    assert(openid, new Error('`openid` is required by WeChat API.'));
-
     try {
       const { unionid, headimgurl, nickname, errcode, errmsg } = await got
         .get(userInfoEndpoint, {
@@ -105,7 +95,7 @@ export default class WeChatConnector implements SocialConnector {
       // 'errmsg' and 'errcode' turn to non-empty values or empty values at the same time. Hence, if 'errmsg' is non-empty then 'errcode' should be non-empty.
 
       assert(errcode !== 40_001, new ConnectorError(ConnectorErrorCodes.SocialAccessTokenInvalid));
-      assert(!errcode, new Error(errmsg));
+      assert(!errcode, new Error(errmsg ?? ''));
 
       return { id: unionid ?? openid, avatar: headimgurl, name: nickname };
     } catch (error: unknown) {
diff --git a/packages/connector-wechat/src/types.ts b/packages/connector-wechat/src/types.ts
index ef41cbaa6..ce1858489 100644
--- a/packages/connector-wechat/src/types.ts
+++ b/packages/connector-wechat/src/types.ts
@@ -11,6 +11,7 @@ export type AccessTokenResponse = {
   refresh_token?: string;
   scope?: string;
   errcode?: number;
+  errmsg?: string;
 };
 
 export type UserInfoResponse = {