diff --git a/sdcl-firmware/Core/Src/main.c b/sdcl-firmware/Core/Src/main.c
index 292908b..f399bd1 100644
--- a/sdcl-firmware/Core/Src/main.c
+++ b/sdcl-firmware/Core/Src/main.c
@@ -211,6 +211,9 @@ int main(void)
   // Ensure we start with SDC disabled
   HAL_GPIO_WritePin(AS_close_SDC_GPIO_Port, AS_close_SDC_Pin, GPIO_PIN_RESET);
 
+  // Show ASB Error by default until we receive CAN
+  HAL_GPIO_WritePin(ASB_Error_GPIO_Port, ASB_Error_Pin, GPIO_PIN_SET);
+
   if (HAL_CAN_Start(&hcan) != HAL_OK)
   	Error_Handler();