diff --git a/communication/message/apperrormessage.cpp b/communication/message/apperrormessage.cpp
index 59e8f5a..038a389 100644
--- a/communication/message/apperrormessage.cpp
+++ b/communication/message/apperrormessage.cpp
@@ -130,6 +130,12 @@ std::string AppErrorMessage::getAppErrorString() {
 			return "Device rebooted to recover from an unexpected error condition";
 		case AppErrorType::AppErrorPortKeyMistmatch:
 			return std::string(netIDString) + ": Mismatch between key in manager and stored key";
+		case AppErrorType::AppErrorBusFailure:
+			return std::string(netIDString) + ": Bus failure";
+		case AppErrorType::AppErrorTapOverflow:
+			return std::string(netIDString) + ": Tap overflow";
+		case AppErrorType::AppErrorEthTxNoLink:
+			return std::string(netIDString) + ": Attempted Ethernet transmit without link";
 		case AppErrorType::AppErrorErrorBufferOverflow:
 			return "Device error buffer overflow";
 		case AppErrorType::AppNoError:
diff --git a/include/icsneo/communication/message/apperrormessage.h b/include/icsneo/communication/message/apperrormessage.h
index ba8ceef..8c81b54 100644
--- a/include/icsneo/communication/message/apperrormessage.h
+++ b/include/icsneo/communication/message/apperrormessage.h
@@ -57,6 +57,9 @@ enum class AppErrorType : uint16_t {
 	AppErrorInvalidSetting = 42,
 	AppErrorSystemFailureRequestedReset = 43,
 	AppErrorPortKeyMistmatch = 45,
+	AppErrorBusFailure = 46,
+	AppErrorTapOverflow = 47,
+	AppErrorEthTxNoLink = 48,
 	AppErrorErrorBufferOverflow = 254,
 	AppNoError = 255
 };