diff --git a/firmware/can_helper.cpp b/firmware/can_helper.cpp
index 1647b8c7..ad783f0f 100644
--- a/firmware/can_helper.cpp
+++ b/firmware/can_helper.cpp
@@ -11,24 +11,26 @@ CanTxMessage::CanTxMessage(uint32_t eid, uint8_t dlc, bool isExtended) {
     memset(m_frame.data8, 0, sizeof(m_frame.data8));
 }
 
-static int txFailureCounter = 0;
+static void onTxIssue() {
+    static int txFailureCounter = 0;
+    static Timer txFailureCounterReset;
 
-static Timer txFailureCounterReset;
-
-bool isTxIssue() {
+    txFailureCounter++;
     if (txFailureCounterReset.hasElapsedSec(10)) {
         txFailureCounterReset.reset();
         txFailureCounter = 0;
     }
     // 10 times 100ms timeout would take a second to enter error condition
-    return txFailureCounter > 10;
+    if (txFailureCounter > 10) {
+        SetFault(0, Fault::CanTxError);
+    }
 }
 
 CanTxMessage::~CanTxMessage() {
     // 100 ms timeout
     msg_t msg = canTransmitTimeout(&CAND1, CAN_ANY_MAILBOX, &m_frame, TIME_MS2I(100));
     if (msg != MSG_OK) {
-        txFailureCounter++;
+        onTxIssue();
     }
 }
 
diff --git a/firmware/can_helper.h b/firmware/can_helper.h
index 9f64773f..5ca38872 100644
--- a/firmware/can_helper.h
+++ b/firmware/can_helper.h
@@ -74,5 +74,3 @@ void transmitStruct(uint32_t eid)
     // see CanTxMessage::~CanTxMessage()
     populateFrame(frame.get());
 }
-
-bool isTxIssue();
diff --git a/firmware/main.cpp b/firmware/main.cpp
index bfb5a1ac..6430b455 100644
--- a/firmware/main.cpp
+++ b/firmware/main.cpp
@@ -14,7 +14,6 @@
 #include "port.h"
 #include "tunerstudio.h"
 #include "indication.h"
-#include "can_helper.h"
 
 #include "wideband_config.h"
 
@@ -61,11 +60,7 @@ int main() {
         /* TODO: show EGT errors */
         auto fault = GetCurrentFault(0);
 
-        if (isTxIssue()) {
-            // temporary solution: light up both LEDs in case of TX error
-            palSetPad(LED_BLUE_PORT, LED_BLUE_PIN);
-            palSetPad(LED_BLUE_PORT, LED_GREEN_PIN);
-        } else if (fault == Fault::None)
+        if (fault == Fault::None)
         {
             // blue is off
             palClearPad(LED_BLUE_PORT, LED_BLUE_PIN);
diff --git a/for_rusefi/wideband_can.h b/for_rusefi/wideband_can.h
index 01f79371..86c20c2f 100644
--- a/for_rusefi/wideband_can.h
+++ b/for_rusefi/wideband_can.h
@@ -40,6 +40,7 @@ enum class Fault : uint8_t
     SensorOverheat = 4,
     SensorUnderheat = 5,
     SensorNoHeatSupply = 6,
+    CanTxError = 7,
 };
 
 struct StandardData