diff --git a/firmware/controllers/algo/obd_error_codes.h b/firmware/controllers/algo/obd_error_codes.h
index 0603a12cd2..1c611c552d 100644
--- a/firmware/controllers/algo/obd_error_codes.h
+++ b/firmware/controllers/algo/obd_error_codes.h
@@ -1754,8 +1754,8 @@ typedef enum {
 	CUSTOM_OBD_58 = 6058,
 	CUSTOM_OBD_59 = 6059,
 
-	CUSTOM_OBD_60 = 6060,
-	CUSTOM_OBD_61 = 6061,
+	CUSTOM_OBD_MMC_START1 = 6060,
+	CUSTOM_OBD_MMC_START2 = 6061,
 	CUSTOM_OBD_62 = 6062,
 	CUSTOM_OBD_63 = 6063,
 	CUSTOM_OBD_64 = 6064,
diff --git a/firmware/hw_layer/mmc_card.cpp b/firmware/hw_layer/mmc_card.cpp
index d40e2f3ffb..7618504f98 100644
--- a/firmware/hw_layer/mmc_card.cpp
+++ b/firmware/hw_layer/mmc_card.cpp
@@ -344,6 +344,10 @@ static void MMCmount(void) {
 		scheduleMsg(&logger, "Error: Already mounted. \"umountsd\" first");
 		return;
 	}
+	if ((MMCD1.state != BLK_STOP) && (MMCD1.state != BLK_ACTIVE)) {
+		firmwareError(CUSTOM_OBD_MMC_START1, "mmc_state1 %d", MMCD1.state);
+		return;
+	}
 	// start to initialize MMC/SD
 	mmcStart(&MMCD1, &mmccfg);					// Configures and activates the MMC peripheral.
 
@@ -430,6 +434,11 @@ void initMmcCard(void) {
 
 	// start to initialize MMC/SD
 	mmcObjectInit(&MMCD1); 						// Initializes an instance.
+	if ((MMCD1.state != BLK_STOP) && (MMCD1.state != BLK_ACTIVE)) {
+		firmwareError(CUSTOM_OBD_MMC_START2, "mmc_state2 %d", MMCD1.state);
+		return;
+	}
+
 	mmcStart(&MMCD1, &mmccfg);
 
 	chThdCreateStatic(mmcThreadStack, sizeof(mmcThreadStack), LOWPRIO, (tfunc_t) MMCmonThread, NULL);