diff --git a/src/lib/ebus/result.cpp b/src/lib/ebus/result.cpp
index 6fce35f1..c9a3379e 100644
--- a/src/lib/ebus/result.cpp
+++ b/src/lib/ebus/result.cpp
@@ -48,6 +48,7 @@ const char* getResultCode(result_t resultCode) {
 	case RESULT_ERR_CRC:          return "ERR: CRC error";
 	case RESULT_ERR_ACK:          return "ERR: ACK error";
 	case RESULT_ERR_NAK:          return "ERR: NAK received";
+	case RESULT_ERR_NO_SIGNAL:    return "ERR: no signal";
 	default:
 		if (resultCode >= 0)
 			return "success: unknown result code";
diff --git a/src/lib/ebus/result.h b/src/lib/ebus/result.h
index 7a26dd72..8ff60f45 100644
--- a/src/lib/ebus/result.h
+++ b/src/lib/ebus/result.h
@@ -51,6 +51,8 @@ static const int RESULT_ERR_CRC = -18;          //!< CRC error
 static const int RESULT_ERR_ACK = -19;          //!< ACK error
 static const int RESULT_ERR_NAK = -20;          //!< NAK received
 
+static const int RESULT_ERR_NO_SIGNAL = -21;    //!< no signal found on the bus
+
 /** type for result code. */
 typedef int result_t;