diff --git a/src/request/RequestClient.ts b/src/request/RequestClient.ts
index 5a82291..3645c08 100644
--- a/src/request/RequestClient.ts
+++ b/src/request/RequestClient.ts
@@ -557,8 +557,18 @@ export class RequestClient implements HttpClient {
 }
 
 export const throwIfError = (response: AxiosResponse) => {
-  if (response.status === 401) {
-    throw new LoginRequiredError()
+  switch (response.status) {
+    case 400:
+      if (typeof response.data === 'object') {
+        throw new LoginRequiredError(response.data)
+      }
+      break
+    case 401:
+      if (typeof response.data === 'object') {
+        throw new LoginRequiredError(response.data)
+      } else {
+        throw new LoginRequiredError()
+      }
   }
 
   if (response.data?.entityID?.includes('login')) {
diff --git a/src/test/RequestClient.spec.ts b/src/test/RequestClient.spec.ts
index 9f8ec7d..b428380 100644
--- a/src/test/RequestClient.spec.ts
+++ b/src/test/RequestClient.spec.ts
@@ -30,6 +30,11 @@ const ERROR_MESSAGES = {
   CCA: 'unable to verify the first certificate'
 }
 
+const incorrectAuthCodeErr = {
+  error: 'unauthorized',
+  error_description: 'Bad credentials'
+}
+
 describe('RequestClient', () => {
   let server: http.Server
 
@@ -65,7 +70,7 @@ describe('RequestClient', () => {
       adapter.getAccessToken('clientId', 'clientSecret', 'incorrect')
     ).rejects.toEqual(
       prefixMessage(
-        new LoginRequiredError(),
+        new LoginRequiredError(incorrectAuthCodeErr),
         'Error while getting access token. '
       )
     )
@@ -246,7 +251,7 @@ describe('RequestClient - Self Signed Server', () => {
       adapter.getAccessToken('clientId', 'clientSecret', 'incorrect')
     ).rejects.toEqual(
       prefixMessage(
-        new LoginRequiredError(),
+        new LoginRequiredError(incorrectAuthCodeErr),
         'Error while getting access token. '
       )
     )
diff --git a/src/types/errors/LoginRequiredError.ts b/src/types/errors/LoginRequiredError.ts
index 854c032..4f0ed20 100644
--- a/src/types/errors/LoginRequiredError.ts
+++ b/src/types/errors/LoginRequiredError.ts
@@ -1,6 +1,10 @@
 export class LoginRequiredError extends Error {
-  constructor() {
-    super('Auth error: You must be logged in to access this resource')
+  constructor(details?: any) {
+    const message = details
+      ? JSON.stringify(details, null, 2)
+      : 'You must be logged in to access this resource'
+
+    super(`Auth error: ${message}`)
     this.name = 'LoginRequiredError'
     Object.setPrototypeOf(this, LoginRequiredError.prototype)
   }