diff --git a/firmware/controllers/algo/obd_error_codes.h b/firmware/controllers/algo/obd_error_codes.h
index 765674031d..637cc1ad1a 100644
--- a/firmware/controllers/algo/obd_error_codes.h
+++ b/firmware/controllers/algo/obd_error_codes.h
@@ -1671,7 +1671,7 @@ typedef enum {
 	CUSTOM_OBD_4 = 6004,
 	CUSTOM_OBD_5 = 6005,
 	CUSTOM_OBD_6 = 6006,
-	CUSTOM_OBD_7 = 6007,
+	CUSTOM_NO_FSIO = 6007,
 	CUSTOM_OBD_8 = 6008,
 	CUSTOM_OBD_9 = 6009,
 
diff --git a/firmware/controllers/core/fsio_core.cpp b/firmware/controllers/core/fsio_core.cpp
index 875cf5e5bc..cec315b8c1 100644
--- a/firmware/controllers/core/fsio_core.cpp
+++ b/firmware/controllers/core/fsio_core.cpp
@@ -300,9 +300,13 @@ float LECalculator::getValue2(float selfValue, LEElement *fistElementInList, Eng
 	return getValue(selfValue, engine);
 }
 
+bool LECalculator::isEmpty() {
+	return first == NULL;
+}
+
 float LECalculator::getValue(float selfValue, Engine *engine) {
-	if (first == NULL) {
-		warning(CUSTOM_OBD_7, "no FSIO code");
+	if (isEmpty()) {
+		warning(CUSTOM_NO_FSIO, "no FSIO code");
 		return NAN;
 	}
 	LEElement *element = first;
diff --git a/firmware/controllers/core/fsio_core.h b/firmware/controllers/core/fsio_core.h
index 58132068a4..4ef7e52146 100644
--- a/firmware/controllers/core/fsio_core.h
+++ b/firmware/controllers/core/fsio_core.h
@@ -95,6 +95,7 @@ public:
 	float getValue(float selfValue, Engine *engine);
 	float getValue2(float selfValue, LEElement *fistElementInList, Engine *engine);
 	void add(LEElement *element);
+	bool isEmpty();
 	void reset();
 	void reset(LEElement *element);
 	le_action_e calcLogAction[MAX_CALC_LOG];
diff --git a/firmware/controllers/core/fsio_impl.cpp b/firmware/controllers/core/fsio_impl.cpp
index 6483948eb7..b0cbe82bc1 100644
--- a/firmware/controllers/core/fsio_impl.cpp
+++ b/firmware/controllers/core/fsio_impl.cpp
@@ -225,13 +225,22 @@ static const char *getGpioPinName(int index) {
 	return NULL;
 }
 
+/**
+ * @param index from zero for (LE_COMMAND_COUNT - 1)
+ */
 static void handleFsio(Engine *engine, int index) {
 	if (boardConfiguration->fsioPins[index] == GPIO_UNASSIGNED)
 		return;
 
 	bool isPwmMode = boardConfiguration->fsioFrequency[index] != NO_PWM;
 
-	float fvalue = calc.getValue2(engine->engineConfiguration2->fsioLastValue[index], fsioLogics[index], engine);
+	float fvalue;
+	if (fsioLogics[index] == NULL) {
+		warning(CUSTOM_NO_FSIO, "no FSIO for #%d %s", index + 1, hwPortname(boardConfiguration->fsioPins[index]));
+		fvalue = NAN;
+	} else {
+		fvalue = calc.getValue2(engine->engineConfiguration2->fsioLastValue[index], fsioLogics[index], engine);
+	}
 	engine->engineConfiguration2->fsioLastValue[index] = fvalue;
 
 	if (isPwmMode) {