diff --git a/Core/Inc/compute.h b/Core/Inc/compute.h
index 03e0268..269806b 100644
--- a/Core/Inc/compute.h
+++ b/Core/Inc/compute.h
@@ -185,7 +185,7 @@ void compute_send_segment_temp_message(acc_data_t *bmsdata);
 
 void compute_send_fault_message(uint8_t status, int16_t curr, int16_t in_dcl);
 
-void compute_send_fault_timer_message(uint8_t start_stop, uint16_t fault_code,
+void compute_send_fault_timer_message(uint8_t start_stop, int fault_code,
 				      uint16_t data_1);
 
 /**
diff --git a/Core/Src/can_handler.c b/Core/Src/can_handler.c
index 745dc5a..fde3ea8 100644
--- a/Core/Src/can_handler.c
+++ b/Core/Src/can_handler.c
@@ -98,7 +98,7 @@ void init_can_msg_config()
 
 	can_msg_t fault_timer_msg;
 	fault_timer_msg.id = FAULT_TIMER_CANID;
-	fault_timer_msg.len = 5;
+	fault_timer_msg.len = 4;
 
 	// rl_data_t rl_discharge_data = { .msg_rate = 5000 };
 	// rl_data_t rl_charge_data = { .msg_rate = 0 };
diff --git a/Core/Src/compute.c b/Core/Src/compute.c
index 17f7243..80881e0 100644
--- a/Core/Src/compute.c
+++ b/Core/Src/compute.c
@@ -535,17 +535,17 @@ void compute_send_fault_message(uint8_t status, int16_t curr, int16_t in_dcl)
 	queue_can_msg(bms_can_msgs[FAULT]);
 }
 
-void compute_send_fault_timer_message(uint8_t start_stop, uint16_t fault_code,
+void compute_send_fault_timer_message(uint8_t start_stop, int fault_code,
 				      uint16_t data_1)
 {
 	struct __attribute__((__packed__)) {
 		uint8_t start_stop;
-		uint16_t fault_code;
+		uint8_t fault_code;
 		int16_t data_1;
 	} fault_timer_msg_data;
 
 	fault_timer_msg_data.start_stop = start_stop;
-	fault_timer_msg_data.fault_code = fault_code;
+	fault_timer_msg_data.fault_code = log2(fault_code);
 	fault_timer_msg_data.data_1 = data_1;
 
 	endian_swap(&fault_timer_msg_data.fault_code,