diff --git a/src/JsonApi/Serializer/ErrorNormalizer.php b/src/JsonApi/Serializer/ErrorNormalizer.php
index 2076a1c1d8..098ca8931d 100644
--- a/src/JsonApi/Serializer/ErrorNormalizer.php
+++ b/src/JsonApi/Serializer/ErrorNormalizer.php
@@ -25,7 +25,7 @@ final class ErrorNormalizer implements NormalizerInterface
 {
     public const FORMAT = 'jsonapi';
 
-    public function __construct(private ?NormalizerInterface $itemNormalizer = null)
+    public function __construct(private ?NormalizerInterface $itemNormalizer = null, private ?NormalizerInterface $problemNormalizer = null)
     {
     }
 
@@ -34,9 +34,24 @@ public function __construct(private ?NormalizerInterface $itemNormalizer = null)
      */
     public function normalize(mixed $data, ?string $format = null, array $context = []): array
     {
-        $jsonApiObject = $this->itemNormalizer->normalize($data, $format, $context);
-        $error = $jsonApiObject['data']['attributes'] ?? [];
-        $error['id'] = $jsonApiObject['data']['id'];
+        if ($data instanceof FlattenException) {
+            $type = \sprintf('/errors/%d', $data->getStatusCode());
+            unset($context['exception']);
+            $problem = $this->problemNormalizer->normalize($data, $format, ['type' => $type] + $context);
+            $error = [
+                'id' => $problem['type'],
+                'title' => $problem['title'],
+                'detail' => $problem['detail'],
+                'status' => $problem['status'],
+                'type' => $problem['type'],
+                'code' => (string) $problem['status'],
+            ];
+        } else {
+            $jsonApiObject = $this->itemNormalizer->normalize($data, $format, $context);
+            $error = $jsonApiObject['data']['attributes'] ?? [];
+            $error['id'] = $jsonApiObject['data']['id'];
+        }
+
         if (isset($error['type'])) {
             $error['links'] = ['type' => $error['type']];
         }
@@ -76,7 +91,7 @@ public function normalize(mixed $data, ?string $format = null, array $context =
      */
     public function supportsNormalization(mixed $data, ?string $format = null, array $context = []): bool
     {
-        return self::FORMAT === $format && ($data instanceof \Exception || $data instanceof FlattenException);
+        return self::FORMAT === $format && ($data instanceof \Exception || ($data instanceof FlattenException && null !== $this->problemNormalizer));
     }
 
     /**
@@ -87,7 +102,7 @@ public function getSupportedTypes(?string $format): array
         if (self::FORMAT === $format) {
             return [
                 \Exception::class => true,
-                FlattenException::class => true,
+                FlattenException::class => null !== $this->problemNormalizer,
             ];
         }
 
diff --git a/src/Symfony/Bundle/Resources/config/jsonapi.php b/src/Symfony/Bundle/Resources/config/jsonapi.php
index 4e6f610c44..b2ae1f2845 100644
--- a/src/Symfony/Bundle/Resources/config/jsonapi.php
+++ b/src/Symfony/Bundle/Resources/config/jsonapi.php
@@ -119,6 +119,6 @@
         ->tag('serializer.normalizer', ['priority' => -780]);
 
     $services->set('api_platform.jsonapi.normalizer.error', ErrorNormalizer::class)
-        ->args([service('api_platform.jsonapi.normalizer.item')])
+        ->args([service('api_platform.jsonapi.normalizer.item'), service('serializer.normalizer.problem')->nullOnInvalid()])
         ->tag('serializer.normalizer', ['priority' => -790]);
 };
diff --git a/tests/Functional/JsonApi/ErrorTest.php b/tests/Functional/JsonApi/ErrorTest.php
index 8833e5e73f..ca3b6a5962 100644
--- a/tests/Functional/JsonApi/ErrorTest.php
+++ b/tests/Functional/JsonApi/ErrorTest.php
@@ -17,6 +17,7 @@
 use ApiPlatform\Tests\Fixtures\TestBundle\ApiResource\JsonApi\ErrorProblem;
 use ApiPlatform\Tests\Fixtures\TestBundle\ApiResource\JsonApiErrorTestResource;
 use ApiPlatform\Tests\SetupClassResourcesTrait;
+use Symfony\Contracts\HttpClient\ResponseInterface;
 
 class ErrorTest extends ApiTestCase
 {
@@ -113,4 +114,47 @@ public function testNotFoundRouteRendersJsonApiFormat(): void
         $this->assertArrayHasKey('detail', $body['errors'][0]);
         $this->assertArrayHasKey('type', $body['errors'][0]);
     }
+
+    public function testRouterNotFoundRendersJsonApiErrorObject(): void
+    {
+        $response = $this->requestWithSymfonyErrorHandling('GET', '/does_not_exist');
+
+        $this->assertResponseStatusCodeSame(404);
+        $this->assertResponseHeaderSame('content-type', 'application/vnd.api+json');
+        $error = $response->toArray(false)['errors'][0];
+        $this->assertSame('/errors/404', $error['id']);
+        $this->assertSame('An error occurred', $error['title']);
+        $this->assertStringContainsString('No route found', $error['detail']);
+        $this->assertSame('404', $error['status']);
+        $this->assertSame('404', $error['code']);
+        $this->assertSame('/errors/404', $error['type']);
+        $this->assertSame(['type' => '/errors/404'], $error['links']);
+    }
+
+    public function testMethodNotAllowedRendersJsonApiErrorObject(): void
+    {
+        $response = $this->requestWithSymfonyErrorHandling('DELETE', '/jsonapi_error_test/existing');
+
+        $this->assertResponseStatusCodeSame(405);
+        $this->assertResponseHeaderSame('content-type', 'application/vnd.api+json');
+        $error = $response->toArray(false)['errors'][0];
+        $this->assertSame('/errors/405', $error['id']);
+        $this->assertSame('An error occurred', $error['title']);
+        $this->assertStringContainsString('Method Not Allowed', $error['detail']);
+        $this->assertSame('405', $error['status']);
+        $this->assertSame('405', $error['code']);
+        $this->assertSame('/errors/405', $error['type']);
+        $this->assertSame(['type' => '/errors/405'], $error['links']);
+    }
+
+    private function requestWithSymfonyErrorHandling(string $method, string $uri): ResponseInterface
+    {
+        $client = self::createClient();
+        $client->disableReboot();
+        static::getContainer()->get('api_platform.listener.exception')->handleSymfonyErrors = false;
+
+        return $client->request($method, $uri, [
+            'headers' => ['accept' => 'application/vnd.api+json'],
+        ]);
+    }
 }