diff --git a/apps/trading/components/welcome-dialog/welcome-dialog.tsx b/apps/trading/components/welcome-dialog/welcome-dialog.tsx
index f7bf46661..1578af15a 100644
--- a/apps/trading/components/welcome-dialog/welcome-dialog.tsx
+++ b/apps/trading/components/welcome-dialog/welcome-dialog.tsx
@@ -13,7 +13,7 @@ import { Routes } from '../../lib/links';
 import { WelcomeDialogContent } from './welcome-dialog-content';
 import { useOnboardingStore } from './use-get-onboarding-step';
 import { ensureSuffix } from '@vegaprotocol/utils';
-import { type ConnectorType } from '@vegaprotocol/wallet';
+import { ConnectorErrors, type ConnectorType } from '@vegaprotocol/wallet';
 
 /**
  * A list of paths on which the welcome dialog should be omitted.
@@ -106,8 +106,10 @@ const ConnectionOptions = ({ onConnect }: { onConnect: () => void }) => {
             );
           })}
         </ul>
-        {error && !error.includes('the user rejected') && (
-          <p className="text-danger text-sm first-letter:uppercase">{error}</p>
+        {error && error.code !== ConnectorErrors.userRejected.code && (
+          <p className="text-danger text-sm first-letter:uppercase">
+            {error.message}
+          </p>
         )}
       </div>
     );
diff --git a/libs/wallet-react/src/components/connect-dialog/connect-dialog.tsx b/libs/wallet-react/src/components/connect-dialog/connect-dialog.tsx
index eadf02a83..3e755453b 100644
--- a/libs/wallet-react/src/components/connect-dialog/connect-dialog.tsx
+++ b/libs/wallet-react/src/components/connect-dialog/connect-dialog.tsx
@@ -5,7 +5,11 @@ import {
   VegaIcon,
   VegaIconNames,
 } from '@vegaprotocol/ui-toolkit';
-import { type ConnectorType, type Status } from '@vegaprotocol/wallet';
+import {
+  ConnectorErrors,
+  type ConnectorType,
+  type Status,
+} from '@vegaprotocol/wallet';
 import { useWallet } from '../../hooks/use-wallet';
 import { useConnect } from '../../hooks/use-connect';
 import classNames from 'classnames';
@@ -59,8 +63,10 @@ export const ConnectionOptions = ({ onConnect }: { onConnect: () => void }) => {
           );
         })}
       </ul>
-      {error && !error.includes('the user rejected') && (
-        <p className="text-danger text-sm first-letter:uppercase">{error}</p>
+      {error && error.code !== ConnectorErrors.userRejected.code && (
+        <p className="text-danger text-sm first-letter:uppercase">
+          {error.message}
+        </p>
       )}
     </div>
   );
diff --git a/libs/wallet/src/connectors/index.ts b/libs/wallet/src/connectors/index.ts
index af3f8555a..df67927a4 100644
--- a/libs/wallet/src/connectors/index.ts
+++ b/libs/wallet/src/connectors/index.ts
@@ -2,3 +2,24 @@ export { InjectedConnector } from './injected-connector';
 export { SnapConnector } from './snap-connector';
 export { JsonRpcConnector } from './json-rpc-connector';
 export { ReadOnlyConnector } from './read-only-connector';
+
+export class ConnectorError extends Error {
+  code: number;
+
+  constructor(message: string, code: number) {
+    super(message);
+    this.code = code;
+  }
+}
+
+export const ConnectorErrors = {
+  userRejected: new ConnectorError('user rejected', 0),
+  noConnector: new ConnectorError('no connector', 1),
+  connect: new ConnectorError('failed to connect', 2),
+  disconnect: new ConnectorError('failed to disconnect', 3),
+  chainId: new ConnectorError('incorrect chain', 4),
+  listKeys: new ConnectorError('failed to list keys', 5),
+  isConnected: new ConnectorError('failed to check connection', 6),
+  sendTransaction: new ConnectorError('failed to send transaction', 7),
+  unknown: new ConnectorError('unknown error', 8),
+};
diff --git a/libs/wallet/src/connectors/injected-connector.ts b/libs/wallet/src/connectors/injected-connector.ts
index 2e3dcd3d2..b4a96122b 100644
--- a/libs/wallet/src/connectors/injected-connector.ts
+++ b/libs/wallet/src/connectors/injected-connector.ts
@@ -1,4 +1,9 @@
-import { type TransactionParams, type Connector } from '../types';
+import { ConnectorErrors } from '.';
+import {
+  type TransactionParams,
+  type Connector,
+  type VegaWalletEvent,
+} from '../types';
 
 export class InjectedConnector implements Connector {
   readonly id = 'injected';
@@ -13,9 +18,7 @@ export class InjectedConnector implements Connector {
       await window.vega.connectWallet({ chainId });
       return { success: true };
     } catch (err) {
-      return {
-        error: err instanceof Error ? err.message : 'failed to connect',
-      };
+      throw ConnectorErrors.connect;
     }
   }
 
@@ -24,7 +27,7 @@ export class InjectedConnector implements Connector {
       await window.vega.disconnectWallet();
       return { success: true };
     } catch (err) {
-      return { error: 'failed to disconnect' };
+      throw ConnectorErrors.disconnect;
     }
   }
 
@@ -34,7 +37,7 @@ export class InjectedConnector implements Connector {
       const res = await window.vega.getChainId();
       return { chainId: res.chainID };
     } catch (err) {
-      return { error: 'failed to get chain id' };
+      throw ConnectorErrors.chainId;
     }
   }
 
@@ -43,7 +46,7 @@ export class InjectedConnector implements Connector {
       const res = await window.vega.listKeys();
       return res.keys;
     } catch (err) {
-      return { error: 'failed to list keys' };
+      throw ConnectorErrors.listKeys;
     }
   }
 
@@ -52,7 +55,7 @@ export class InjectedConnector implements Connector {
       const res = await window.vega.isConnected();
       return { connected: res };
     } catch (err) {
-      return { error: 'failed to check isConnected' };
+      throw ConnectorErrors.isConnected;
     }
   }
 
@@ -67,16 +70,15 @@ export class InjectedConnector implements Connector {
         sentAt: res.sentAt,
       };
     } catch (err) {
-      console.error(err);
-      return { error: 'failed to send transaction' };
+      throw ConnectorErrors.isConnected;
     }
   }
 
-  on(event: 'client.disconnected', callback: () => void) {
+  on(event: VegaWalletEvent, callback: () => void) {
     window.vega.on(event, callback);
   }
 
-  off(event: 'client.disconnected') {
+  off(event: VegaWalletEvent) {
     window.vega.off(event);
   }
 }
diff --git a/libs/wallet/src/connectors/json-rpc-connector.ts b/libs/wallet/src/connectors/json-rpc-connector.ts
index c390ed1fc..bd0f1b891 100644
--- a/libs/wallet/src/connectors/json-rpc-connector.ts
+++ b/libs/wallet/src/connectors/json-rpc-connector.ts
@@ -5,6 +5,7 @@ import {
   type TransactionParams,
   type Store,
 } from '../types';
+import { ConnectorError, ConnectorErrors } from '.';
 
 type JsonRpcConnectorConfig = { url: string; token?: string };
 
@@ -31,11 +32,11 @@ export class JsonRpcConnector implements Connector {
       const chainRes = await this.getChainId();
 
       if ('error' in chainRes) {
-        return { error: chainRes.error };
+        throw ConnectorErrors.chainId;
       }
 
       if (chainRes.chainId !== desiredChainId) {
-        return { error: 'incorrect chain' };
+        throw ConnectorErrors.chainId;
       }
 
       if (!this.token) {
@@ -49,15 +50,16 @@ export class JsonRpcConnector implements Connector {
         const token = response.headers.get('Authorization');
 
         if (!response.ok) {
-          if ('error' in data) {
-            return { error: data.error.data };
+          // TODO: extend ConnectorError with data on jsonrpc error
+          if ('error' in data && data.error.code === 3001) {
+            // user rejected
+            throw ConnectorErrors.userRejected;
           }
-
-          return { error: 'failed to connect' };
+          throw ConnectorErrors.connect;
         }
 
         if (!token) {
-          return { error: 'failed to connect' };
+          throw ConnectorErrors.connect;
         }
 
         this.token = token;
@@ -65,7 +67,11 @@ export class JsonRpcConnector implements Connector {
 
       return { success: true };
     } catch (err) {
-      return { error: 'wallet not running' };
+      if (err instanceof ConnectorError) {
+        throw err;
+      }
+
+      throw ConnectorErrors.noConnector;
     }
   }
 
@@ -74,7 +80,7 @@ export class JsonRpcConnector implements Connector {
       await this.request(JsonRpcMethod.DisconnectWallet);
       return { success: true };
     } catch (err) {
-      return { error: 'wallet not running' };
+      throw ConnectorErrors.disconnect;
     }
   }
 
@@ -85,7 +91,7 @@ export class JsonRpcConnector implements Connector {
 
       return { chainId: data.result.chainID };
     } catch (err) {
-      return { error: 'wallet not running' };
+      throw ConnectorErrors.chainId;
     }
   }
 
@@ -94,7 +100,7 @@ export class JsonRpcConnector implements Connector {
       const { data } = await this.request(JsonRpcMethod.ListKeys);
       return data.result.keys as Array<{ publicKey: string; name: string }>;
     } catch (err) {
-      return { error: 'wallet not running' };
+      throw ConnectorErrors.noConnector;
     }
   }
 
@@ -103,7 +109,7 @@ export class JsonRpcConnector implements Connector {
       await this.listKeys();
       return { connected: true };
     } catch (err) {
-      return { error: 'wallet not running' };
+      throw ConnectorErrors.noConnector;
     }
   }
 
@@ -114,6 +120,8 @@ export class JsonRpcConnector implements Connector {
         params
       );
 
+      // TODO handle not okay responses but wallet is running
+
       return {
         transactionHash: data.result.transactionHash,
         signature: data.result.transaction.signature.value,
@@ -121,7 +129,11 @@ export class JsonRpcConnector implements Connector {
         sentAt: data.result.sentAt,
       };
     } catch (err) {
-      return { error: 'wallet not running' };
+      if (err instanceof ConnectorError) {
+        throw err;
+      }
+
+      throw ConnectorErrors.noConnector;
     }
   }
 
diff --git a/libs/wallet/src/connectors/read-only-connector.ts b/libs/wallet/src/connectors/read-only-connector.ts
index b61f34aff..94e75fd5a 100644
--- a/libs/wallet/src/connectors/read-only-connector.ts
+++ b/libs/wallet/src/connectors/read-only-connector.ts
@@ -1,6 +1,7 @@
 import { type StoreApi } from 'zustand';
 import { type Store, type Connector } from '../types';
 import { isValidVegaPublicKey } from '@vegaprotocol/utils';
+import { ConnectorError, ConnectorErrors } from '.';
 
 export class ReadOnlyConnector implements Connector {
   readonly id = 'readOnly';
@@ -20,20 +21,33 @@ export class ReadOnlyConnector implements Connector {
   }
 
   async connectWallet() {
-    if (!this.pubKey) {
+    try {
+      if (this.pubKey) {
+        return { success: true };
+      }
+
       const value = window.prompt('Enter public key');
 
       if (value === null) {
-        return { error: 'the user rejected' };
+        throw ConnectorErrors.userRejected;
       }
 
+      // TODO: extend connect error with messaging for invalid public key
       if (!isValidVegaPublicKey(value)) {
-        return { error: 'invalid public key' };
+        // throw new Error('invalid public key');
+        throw ConnectorErrors.connect;
       }
 
       this.pubKey = value;
+
+      return { success: true };
+    } catch (err) {
+      if (err instanceof ConnectorError) {
+        throw err;
+      }
+
+      throw ConnectorErrors.connect;
     }
-    return { success: true };
   }
 
   async disconnectWallet() {
@@ -42,14 +56,12 @@ export class ReadOnlyConnector implements Connector {
   }
 
   async getChainId() {
-    return {
-      error: `You are connected in a view only state for public key: ${this.pubKey}`,
-    };
+    throw ConnectorErrors.chainId;
   }
 
   async listKeys() {
     if (!this.pubKey) {
-      return { error: 'failed to list keys' };
+      throw ConnectorErrors.listKeys;
     }
     return [
       {
@@ -69,9 +81,12 @@ export class ReadOnlyConnector implements Connector {
 
   // @ts-ignore deliberate fail
   async sendTransaction() {
-    return {
-      error: `You are connected in a view only state for public key: ${this.pubKey}. In order to send transactions you must connect to a real wallet.`,
-    };
+    // TODO: extend send tx with more information
+    //
+    // return {
+    //   error: `You are connected in a view only state for public key: ${this.pubKey}. In order to send transactions you must connect to a real wallet.`,
+    // };
+    throw ConnectorErrors.sendTransaction;
   }
 
   on() {
diff --git a/libs/wallet/src/connectors/snap-connector.ts b/libs/wallet/src/connectors/snap-connector.ts
index 74a9788ba..6997d49a7 100644
--- a/libs/wallet/src/connectors/snap-connector.ts
+++ b/libs/wallet/src/connectors/snap-connector.ts
@@ -1,3 +1,4 @@
+import { ConnectorError, ConnectorErrors } from '.';
 import {
   JsonRpcMethod,
   type Connector,
@@ -41,20 +42,22 @@ export class SnapConnector implements Connector {
       const { chainId } = await this.getChainId();
 
       if (chainId !== desiredChainId) {
-        throw new Error('incorrect chain id');
+        throw ConnectorErrors.chainId;
       }
 
       return { success: true };
     } catch (err) {
-      return {
-        error: err instanceof Error ? err.message : 'failed to connect',
-      };
+      if (err instanceof ConnectorError) {
+        throw err;
+      }
+
+      throw ConnectorErrors.noConnector;
     }
   }
 
+  // TODO: check how snaps should actually disconnect
   async disconnectWallet() {
     return { success: true };
-    // return { error: 'failed to disconnect' };
   }
 
   // deprecated, pass chain on connect
@@ -65,7 +68,7 @@ export class SnapConnector implements Connector {
       });
       return { chainId: res.chainID };
     } catch (err) {
-      return { error: 'failed to get chain id' };
+      throw ConnectorErrors.chainId;
     }
   }
 
@@ -74,13 +77,13 @@ export class SnapConnector implements Connector {
       const res = await this.invokeSnap(JsonRpcMethod.ListKeys);
       return res.keys as Array<{ publicKey: string; name: string }>;
     } catch (err) {
-      return { error: 'failed to list keys' };
+      throw ConnectorErrors.listKeys;
     }
   }
 
   async isConnected() {
     console.warn('isConnected not implemented');
-    return { error: 'failed to check if connected' };
+    throw ConnectorErrors.isConnected;
   }
 
   async sendTransaction(params: TransactionParams) {
@@ -99,8 +102,7 @@ export class SnapConnector implements Connector {
         sentAt: res.sentAt,
       };
     } catch (err) {
-      console.error(err);
-      return { error: 'failed to send transaction' };
+      throw ConnectorErrors.sendTransaction;
     }
   }
 
diff --git a/libs/wallet/src/index.ts b/libs/wallet/src/index.ts
index 82137d2d6..8d6584181 100644
--- a/libs/wallet/src/index.ts
+++ b/libs/wallet/src/index.ts
@@ -16,6 +16,8 @@ export {
   SnapConnector,
   JsonRpcConnector,
   ReadOnlyConnector,
+  ConnectorError,
+  ConnectorErrors,
 } from './connectors';
 
 // Utils
diff --git a/libs/wallet/src/types.ts b/libs/wallet/src/types.ts
index 0f0cfd359..af126e3c1 100644
--- a/libs/wallet/src/types.ts
+++ b/libs/wallet/src/types.ts
@@ -4,6 +4,7 @@ import {
   type TransactionResponse,
 } from './transaction-types';
 import { type Chain } from './chains';
+import { type ConnectorError } from './connectors';
 
 export enum JsonRpcMethod {
   ConnectWallet = 'client.connect_wallet',
@@ -14,17 +15,13 @@ export enum JsonRpcMethod {
   GetChainId = 'client.get_chain_id',
 }
 
-export interface IWalletError {
-  error: string;
-}
-
 export interface TransactionParams {
   publicKey: string;
   transaction: Transaction;
   sendingMode: 'TYPE_SYNC';
 }
 
-type VegaWalletEvent = 'client.disconnected';
+export type VegaWalletEvent = 'client.disconnected';
 
 export type ConnectorType =
   | 'injected'
@@ -39,16 +36,12 @@ export interface Connector {
   readonly description: string;
 
   bindStore(state: StoreApi<Store>): void;
-  connectWallet(chainId?: string): Promise<{ success: boolean } | IWalletError>;
-  disconnectWallet(): Promise<{ success: boolean } | IWalletError>;
-  getChainId(): Promise<{ chainId: string } | IWalletError>;
-  listKeys(): Promise<
-    Array<{ publicKey: string; name: string }> | IWalletError
-  >;
-  isConnected(): Promise<{ connected: boolean } | IWalletError>;
-  sendTransaction(
-    params: TransactionParams
-  ): Promise<TransactionResponse | IWalletError>;
+  connectWallet(chainId?: string): Promise<{ success: boolean }>;
+  disconnectWallet(): Promise<{ success: boolean }>;
+  getChainId(): Promise<{ chainId: string }>;
+  listKeys(): Promise<Array<{ publicKey: string; name: string }>>;
+  isConnected(): Promise<{ connected: boolean }>;
+  sendTransaction(params: TransactionParams): Promise<TransactionResponse>;
   on(event: VegaWalletEvent, callback: () => void): void;
   off(event: VegaWalletEvent): void;
 }
@@ -65,14 +58,12 @@ export type CoreStore = {
   status: Status;
   current: ConnectorType | undefined;
   keys: Key[];
-  // setKeys: (keys: Key[]) => void;
-  error: string | undefined;
+  error: ConnectorError | undefined;
   jsonRpcToken: string | undefined;
 };
 
 export type SingleKeyStore = {
   pubKey: string | undefined;
-  // setPubKey: (key: string) => void;
 };
 
 export type Store = CoreStore & SingleKeyStore;
@@ -89,9 +80,7 @@ export type Wallet = {
   connect: (id: ConnectorType) => Promise<{ success: boolean } | undefined>;
   disconnect: () => Promise<{ success: boolean } | undefined>;
   refreshKeys: () => Promise<void>;
-  sendTransaction: (
-    params: TransactionParams
-  ) => Promise<TransactionResponse | IWalletError>;
+  sendTransaction: (params: TransactionParams) => Promise<TransactionResponse>;
   reset: () => void;
 };
 
diff --git a/libs/wallet/src/wallet.ts b/libs/wallet/src/wallet.ts
index f5600e9c8..b8da1f552 100644
--- a/libs/wallet/src/wallet.ts
+++ b/libs/wallet/src/wallet.ts
@@ -10,6 +10,7 @@ import {
   type Connector,
   type ConnectorType,
 } from './types';
+import { ConnectorError, ConnectorErrors } from './connectors';
 
 // get/set functions are not used in the slices so these
 // can be plain objects
@@ -78,31 +79,20 @@ export function createConfig(cfg: Config): Wallet {
     try {
       store.setState({ status: 'connecting', current: id, error: undefined });
 
-      const connectWalletRes = await connector.connectWallet(
-        store.getState().chainId
-      );
-
-      if ('error' in connectWalletRes) {
-        throw new Error(connectWalletRes.error);
-      }
-
-      const listKeysRes = await connector.listKeys();
-
-      if ('error' in listKeysRes) {
-        throw new Error('failed to get keys');
-      }
+      await connector.connectWallet(store.getState().chainId);
+      const keys = await connector.listKeys();
 
       // TODO: this shouldnt be in core as we dont want to enforce single key usage
       const storedPubKey = store.getState().pubKey;
       let defaultKey;
-      if (listKeysRes.find((k) => k.publicKey === storedPubKey)) {
+      if (keys.find((k) => k.publicKey === storedPubKey)) {
         defaultKey = storedPubKey;
       } else {
-        defaultKey = listKeysRes[0].publicKey;
+        defaultKey = keys[0].publicKey;
       }
 
       store.setState({
-        keys: listKeysRes,
+        keys,
         status: 'connected',
         pubKey: defaultKey,
       });
@@ -117,7 +107,7 @@ export function createConfig(cfg: Config): Wallet {
         status: 'disconnected',
         current: undefined,
         keys: [],
-        error: err instanceof Error ? err.message : 'failed to connect',
+        error: err instanceof ConnectorError ? err : ConnectorErrors.unknown,
       });
       return { success: false };
     }