diff --git a/pom.xml b/pom.xml
index 9008dd4..3fc6d2e 100644
--- a/pom.xml
+++ b/pom.xml
@@ -39,7 +39,7 @@
         <gravitee-common.version>1.26.1</gravitee-common.version>
         <gravitee-resource-api.version>1.1.0</gravitee-resource-api.version>
         <gravitee-gateway-api.version>1.18.1</gravitee-gateway-api.version>
-        <gravitee-resource-oauth2-provider-api.version>1.3.0</gravitee-resource-oauth2-provider-api.version>
+        <gravitee-resource-oauth2-provider-api.version>1.4.0</gravitee-resource-oauth2-provider-api.version>
         <gravitee-node.version>1.23.0</gravitee-node.version>
         <maven-assembly-plugin.version>2.5.5</maven-assembly-plugin.version>
         <!-- Property used by the publication job in CI-->
diff --git a/src/main/java/io/gravitee/resource/oauth2/am/OAuth2AMResource.java b/src/main/java/io/gravitee/resource/oauth2/am/OAuth2AMResource.java
index b6f67fc..c6c969d 100644
--- a/src/main/java/io/gravitee/resource/oauth2/am/OAuth2AMResource.java
+++ b/src/main/java/io/gravitee/resource/oauth2/am/OAuth2AMResource.java
@@ -28,6 +28,7 @@
 import io.gravitee.node.container.spring.SpringEnvironmentConfiguration;
 import io.gravitee.resource.oauth2.am.configuration.OAuth2ResourceConfiguration;
 import io.gravitee.resource.oauth2.api.OAuth2Resource;
+import io.gravitee.resource.oauth2.api.OAuth2ResourceException;
 import io.gravitee.resource.oauth2.api.OAuth2Response;
 import io.gravitee.resource.oauth2.api.openid.UserInfoResponse;
 import io.vertx.core.AsyncResult;
@@ -189,7 +190,7 @@ public void introspect(String accessToken, Handler<OAuth2Response> responseHandl
                     @Override
                     public void handle(Throwable event) {
                         logger.error("An error occurs while checking access token", event);
-                        responseHandler.handle(new OAuth2Response(false, event.getMessage()));
+                        responseHandler.handle(new OAuth2Response(event));
                     }
                 }
             )
@@ -204,7 +205,7 @@ public void handle(HttpClientRequest request) {
                                     public void handle(AsyncResult<HttpClientResponse> asyncResponse) {
                                         if (asyncResponse.failed()) {
                                             logger.error("An error occurs while checking access token", asyncResponse.cause());
-                                            responseHandler.handle(new OAuth2Response(false, asyncResponse.cause().getMessage()));
+                                            responseHandler.handle(new OAuth2Response(asyncResponse.cause()));
                                         } else {
                                             final HttpClientResponse response = asyncResponse.result();
                                             logger.debug(
@@ -229,7 +230,16 @@ public void handle(AsyncResult<HttpClientResponse> asyncResponse) {
                                                         );
                                                     }
                                                 } else {
-                                                    responseHandler.handle(new OAuth2Response(false, buffer.toString()));
+                                                    logger.error(
+                                                        "An error occurs while checking access token. Request ends with status {}: {}",
+                                                        response.statusCode(),
+                                                        buffer.toString()
+                                                    );
+                                                    responseHandler.handle(
+                                                        new OAuth2Response(
+                                                            new OAuth2ResourceException("An error occurs while checking access token")
+                                                        )
+                                                    );
                                                 }
                                             });
                                         }
@@ -241,7 +251,7 @@ public void handle(AsyncResult<HttpClientResponse> asyncResponse) {
                                     @Override
                                     public void handle(Throwable event) {
                                         logger.error("An error occurs while checking access token", event);
-                                        responseHandler.handle(new OAuth2Response(false, event.getMessage()));
+                                        responseHandler.handle(new OAuth2Response(event));
                                     }
                                 }
                             )
diff --git a/src/test/java/io/gravitee/resource/oauth2/am/OAuth2AMResourceTest.java b/src/test/java/io/gravitee/resource/oauth2/am/OAuth2AMResourceTest.java
index 7ea3a8a..a5629d4 100644
--- a/src/test/java/io/gravitee/resource/oauth2/am/OAuth2AMResourceTest.java
+++ b/src/test/java/io/gravitee/resource/oauth2/am/OAuth2AMResourceTest.java
@@ -131,6 +131,7 @@ public void shouldNotValidateAccessToken() throws Exception {
             accessToken,
             oAuth2Response -> {
                 Assert.assertFalse(oAuth2Response.isSuccess());
+                Assert.assertEquals("An error occurs while checking access token", oAuth2Response.getPayload());
                 lock.countDown();
             }
         );
@@ -162,6 +163,31 @@ public void shouldNotValidateAccessToken_v2() throws Exception {
         Assert.assertEquals(true, lock.await(10000, TimeUnit.MILLISECONDS));
     }
 
+    @Test
+    public void shouldNotValidateAccessToken_v2_not_200() throws Exception {
+        String accessToken = "xxxx-xxxx-xxxx-xxxx";
+        stubFor(post(urlEqualTo("/domain/oauth/introspect")).willReturn(aResponse().withStatus(401)));
+
+        final CountDownLatch lock = new CountDownLatch(1);
+
+        Mockito.when(configuration.getSecurityDomain()).thenReturn("domain");
+        Mockito.when(configuration.getVersion()).thenReturn(OAuth2ResourceConfiguration.Version.V2_X);
+        Mockito.when(configuration.getServerURL()).thenReturn("http://localhost:" + wireMockRule.port());
+
+        resource.doStart();
+
+        resource.introspect(
+            accessToken,
+            oAuth2Response -> {
+                Assert.assertFalse(oAuth2Response.isSuccess());
+                Assert.assertEquals("An error occurs while checking access token", oAuth2Response.getPayload());
+                lock.countDown();
+            }
+        );
+
+        Assert.assertEquals(true, lock.await(10000, TimeUnit.MILLISECONDS));
+    }
+
     @Test
     public void shouldGetUserInfo() throws Exception {
         stubFor(