diff --git a/packages/errors/api-report.md b/packages/errors/api-report.md
index 42da6e28a6..3ece63035b 100644
--- a/packages/errors/api-report.md
+++ b/packages/errors/api-report.md
@@ -34,7 +34,6 @@ export type ConsumedResponse = {
     values(): IterableIterator<string>;
     [Symbol.iterator](): Iterator<[string, string]>;
   };
-  readonly bodyUsed: boolean;
   readonly ok: boolean;
   readonly redirected: boolean;
   readonly status: number;
@@ -112,12 +111,6 @@ export class NotModifiedError extends CustomErrorBase {
   name: 'NotModifiedError';
 }
 
-// @public
-export function parseErrorResponseBody(
-  response: ConsumedResponse,
-  rawBody: string,
-): Promise<ErrorResponseBody>;
-
 // @public
 export function parseErrorResponseBody(
   response: ConsumedResponse & {
@@ -132,10 +125,8 @@ export class ResponseError extends Error {
   static fromResponse(
     response: ConsumedResponse & {
       text(): Promise<string>;
-      bodyUsed: boolean;
     },
   ): Promise<ResponseError>;
-  readonly rawBody: string;
   readonly response: ConsumedResponse;
 }
 
diff --git a/packages/errors/src/errors/ResponseError.ts b/packages/errors/src/errors/ResponseError.ts
index 0fff541218..f8ba0a1ba1 100644
--- a/packages/errors/src/errors/ResponseError.ts
+++ b/packages/errors/src/errors/ResponseError.ts
@@ -42,11 +42,6 @@ export class ResponseError extends Error {
    */
   readonly body: ErrorResponseBody;
 
-  /**
-   * The unparsed possibly JSON error body. Will be set even if the returned error doesn't match {@link ErrorResponseBody}.
-   */
-  readonly rawBody: string;
-
   /**
    * The Error cause, as seen by the remote server. This is parsed out of the
    * JSON error body.
@@ -66,20 +61,9 @@ export class ResponseError extends Error {
    * been consumed before.
    */
   static async fromResponse(
-    response: ConsumedResponse & { text(): Promise<string>; bodyUsed: boolean },
+    response: ConsumedResponse & { text(): Promise<string> },
   ): Promise<ResponseError> {
-    let rawBody = '';
-    try {
-      rawBody = await response.text();
-    } catch {
-      // ignore
-    }
-
-    const data = await parseErrorResponseBody(
-      // TS isn't smart enough to know that this is done under the hood,
-      response,
-      rawBody,
-    );
+    const data = await parseErrorResponseBody(response);
 
     const status = data.response.statusCode || response.status;
     const statusText = data.error.name || response.statusText;
@@ -91,7 +75,6 @@ export class ResponseError extends Error {
       response,
       data,
       cause,
-      rawBody,
     });
   }
 
@@ -99,7 +82,6 @@ export class ResponseError extends Error {
     message: string;
     response: ConsumedResponse;
     data: ErrorResponseBody;
-    rawBody: string;
     cause: Error;
   }) {
     super(props.message);
@@ -107,6 +89,5 @@ export class ResponseError extends Error {
     this.response = props.response;
     this.body = props.data;
     this.cause = props.cause;
-    this.rawBody = props.rawBody;
   }
 }
diff --git a/packages/errors/src/errors/types.ts b/packages/errors/src/errors/types.ts
index b4b00f2707..b0e86fd19a 100644
--- a/packages/errors/src/errors/types.ts
+++ b/packages/errors/src/errors/types.ts
@@ -34,7 +34,6 @@ export type ConsumedResponse = {
     values(): IterableIterator<string>;
     [Symbol.iterator](): Iterator<[string, string]>;
   };
-  readonly bodyUsed: boolean;
   readonly ok: boolean;
   readonly redirected: boolean;
   readonly status: number;
diff --git a/packages/errors/src/serialization/response.ts b/packages/errors/src/serialization/response.ts
index c7d45465db..60894b243e 100644
--- a/packages/errors/src/serialization/response.ts
+++ b/packages/errors/src/serialization/response.ts
@@ -41,19 +41,6 @@ export type ErrorResponseBody = {
   };
 };
 
-/**
- * Attempts to construct an ErrorResponseBody out of a failed server request.
- * Assumes that the response has already been checked to be not ok. This function
- *  expects that rawBody is the body of the response and will not attempt to
- *  parse the body from the response again.
- *
- * @public
- * @param response - The response of a failed request
- */
-export async function parseErrorResponseBody(
-  response: ConsumedResponse,
-  rawBody: string,
-): Promise<ErrorResponseBody>;
 /**
  * Attempts to construct an ErrorResponseBody out of a failed server request.
  * Assumes that the response has already been checked to be not ok. This
@@ -68,16 +55,9 @@ export async function parseErrorResponseBody(
  */
 export async function parseErrorResponseBody(
   response: ConsumedResponse & { text(): Promise<string> },
-): Promise<ErrorResponseBody>;
-export async function parseErrorResponseBody(
-  response: ConsumedResponse | (ConsumedResponse & { text(): Promise<string> }),
-  rawBody?: string,
 ): Promise<ErrorResponseBody> {
   try {
-    const text =
-      !response.bodyUsed && 'text' in response
-        ? await response.text()
-        : rawBody;
+    const text = await response.text();
     if (text) {
       if (
         response.headers.get('content-type')?.startsWith('application/json')