diff --git a/src/meshcore/events.py b/src/meshcore/events.py
index 00bde4a..f8a7521 100644
--- a/src/meshcore/events.py
+++ b/src/meshcore/events.py
@@ -64,6 +64,15 @@ class EventType(Enum):
     CONNECTED = "connected"
     DISCONNECTED = "disconnected"
 
+# a dict to associate a message to an error code
+ErrorMessages = {
+    1: "ERR_CODE_UNSUPPORTED_CMD",
+    2: "ERR_CODE_NOT_FOUND",
+    3: "ERR_CODE_TABLE_FULL",
+    4: "ERR_CODE_BAD_STATE",
+    5: "ERR_CODE_FILE_IO_ERROR",
+    6: "ERR_CODE_ILLEGAL_ARG",
+}
 
 @dataclass
 class Event:
diff --git a/src/meshcore/reader.py b/src/meshcore/reader.py
index 254b488..fa63ee7 100644
--- a/src/meshcore/reader.py
+++ b/src/meshcore/reader.py
@@ -4,7 +4,7 @@ import struct
 import time
 import io
 from typing import Any, Dict
-from .events import Event, EventType, EventDispatcher
+from .events import Event, EventType, EventDispatcher, ErrorMessages
 from .packets import BinaryReqType, PacketType, ControlType
 from .parsing import lpp_parse, lpp_parse_mma, parse_acl, parse_status
 from cayennelpp import LppFrame, LppData
@@ -80,7 +80,10 @@ class MessageReader:
 
         elif packet_type_value == PacketType.ERROR.value:
             if len(data) > 1:
-                result = {"error_code": data[1]}
+                result = {
+                    "error_code": data[1],
+                    "code_string": ErrorMessages[data[1]],
+                }
             else:
                 result = {}