diff --git a/include/zephyr/bluetooth/mesh/access.h b/include/zephyr/bluetooth/mesh/access.h
index 6bd23887180..f6123b76d17 100644
--- a/include/zephyr/bluetooth/mesh/access.h
+++ b/include/zephyr/bluetooth/mesh/access.h
@@ -49,7 +49,8 @@ extern "C" {
 #define BT_MESH_KEY_DEV_ANY       0xfffc
 
 #define BT_MESH_ADDR_IS_UNICAST(addr) ((addr) && (addr) < 0x8000)
-#define BT_MESH_ADDR_IS_GROUP(addr) ((addr) >= 0xc000 && (addr) <= 0xff00)
+#define BT_MESH_ADDR_IS_GROUP(addr) ((addr) >= 0xc000 && (addr) < 0xff00)
+#define BT_MESH_ADDR_IS_FIXED_GROUP(addr) ((addr) >= 0xfffc && (addr) < 0xffff)
 #define BT_MESH_ADDR_IS_VIRTUAL(addr) ((addr) >= 0x8000 && (addr) < 0xc000)
 #define BT_MESH_ADDR_IS_RFU(addr) ((addr) >= 0xff00 && (addr) <= 0xfffb)
 
diff --git a/subsys/bluetooth/mesh/access.c b/subsys/bluetooth/mesh/access.c
index f0d58fe6dfe..3f827642586 100644
--- a/subsys/bluetooth/mesh/access.c
+++ b/subsys/bluetooth/mesh/access.c
@@ -583,7 +583,8 @@ static bool model_has_dst(struct bt_mesh_model *mod, uint16_t dst)
 {
 	if (BT_MESH_ADDR_IS_UNICAST(dst)) {
 		return (dev_comp->elem[mod->elem_idx].addr == dst);
-	} else if (BT_MESH_ADDR_IS_GROUP(dst) || BT_MESH_ADDR_IS_VIRTUAL(dst)) {
+	} else if (BT_MESH_ADDR_IS_GROUP(dst) || BT_MESH_ADDR_IS_VIRTUAL(dst) ||
+		  (BT_MESH_ADDR_IS_FIXED_GROUP(dst) &&  mod->elem_idx != 0)) {
 		return !!bt_mesh_model_find_group(&mod, dst);
 	}
 
diff --git a/subsys/bluetooth/mesh/cfg_cli.c b/subsys/bluetooth/mesh/cfg_cli.c
index 732ab451c8d..d6888d6a91a 100644
--- a/subsys/bluetooth/mesh/cfg_cli.c
+++ b/subsys/bluetooth/mesh/cfg_cli.c
@@ -1883,7 +1883,7 @@ static int mod_sub(uint32_t op, uint16_t net_idx, uint16_t addr, uint16_t elem_a
 int bt_mesh_cfg_mod_sub_add(uint16_t net_idx, uint16_t addr, uint16_t elem_addr,
 			    uint16_t sub_addr, uint16_t mod_id, uint8_t *status)
 {
-	if (!BT_MESH_ADDR_IS_GROUP(sub_addr)) {
+	if (!BT_MESH_ADDR_IS_GROUP(sub_addr) && !BT_MESH_ADDR_IS_FIXED_GROUP(sub_addr)) {
 		return -EINVAL;
 	}
 
@@ -1895,7 +1895,8 @@ int bt_mesh_cfg_mod_sub_add_vnd(uint16_t net_idx, uint16_t addr, uint16_t elem_a
 				 uint16_t sub_addr, uint16_t mod_id, uint16_t cid,
 				 uint8_t *status)
 {
-	if (!BT_MESH_ADDR_IS_GROUP(sub_addr) || cid == CID_NVAL) {
+	if ((!BT_MESH_ADDR_IS_GROUP(sub_addr) && !BT_MESH_ADDR_IS_FIXED_GROUP(sub_addr)) ||
+		cid == CID_NVAL) {
 		return -EINVAL;
 	}
 
@@ -1906,7 +1907,7 @@ int bt_mesh_cfg_mod_sub_add_vnd(uint16_t net_idx, uint16_t addr, uint16_t elem_a
 int bt_mesh_cfg_mod_sub_del(uint16_t net_idx, uint16_t addr, uint16_t elem_addr,
 			    uint16_t sub_addr, uint16_t mod_id, uint8_t *status)
 {
-	if (!BT_MESH_ADDR_IS_GROUP(sub_addr)) {
+	if (!BT_MESH_ADDR_IS_GROUP(sub_addr) && !BT_MESH_ADDR_IS_FIXED_GROUP(sub_addr)) {
 		return -EINVAL;
 	}
 
@@ -1926,7 +1927,8 @@ int bt_mesh_cfg_mod_sub_del_vnd(uint16_t net_idx, uint16_t addr, uint16_t elem_a
 				uint16_t sub_addr, uint16_t mod_id, uint16_t cid,
 				uint8_t *status)
 {
-	if (!BT_MESH_ADDR_IS_GROUP(sub_addr) || cid == CID_NVAL) {
+	if ((!BT_MESH_ADDR_IS_GROUP(sub_addr) && !BT_MESH_ADDR_IS_FIXED_GROUP(sub_addr)) ||
+		cid == CID_NVAL) {
 		return -EINVAL;
 	}
 
@@ -1949,7 +1951,7 @@ int bt_mesh_cfg_mod_sub_del_all_vnd(uint16_t net_idx, uint16_t addr,
 int bt_mesh_cfg_mod_sub_overwrite(uint16_t net_idx, uint16_t addr, uint16_t elem_addr,
 				  uint16_t sub_addr, uint16_t mod_id, uint8_t *status)
 {
-	if (!BT_MESH_ADDR_IS_GROUP(sub_addr)) {
+	if (!BT_MESH_ADDR_IS_GROUP(sub_addr) && !BT_MESH_ADDR_IS_FIXED_GROUP(sub_addr)) {
 		return -EINVAL;
 	}
 
@@ -1961,7 +1963,8 @@ int bt_mesh_cfg_mod_sub_overwrite_vnd(uint16_t net_idx, uint16_t addr,
 				      uint16_t elem_addr, uint16_t sub_addr,
 				      uint16_t mod_id, uint16_t cid, uint8_t *status)
 {
-	if (!BT_MESH_ADDR_IS_GROUP(sub_addr) || cid == CID_NVAL) {
+	if ((!BT_MESH_ADDR_IS_GROUP(sub_addr) && !BT_MESH_ADDR_IS_FIXED_GROUP(sub_addr)) ||
+		cid == CID_NVAL) {
 		return -EINVAL;
 	}
 
diff --git a/subsys/bluetooth/mesh/cfg_srv.c b/subsys/bluetooth/mesh/cfg_srv.c
index 6313282a85a..226458bcaa9 100644
--- a/subsys/bluetooth/mesh/cfg_srv.c
+++ b/subsys/bluetooth/mesh/cfg_srv.c
@@ -1039,7 +1039,7 @@ static int mod_sub_add(struct bt_mesh_model *model,
 		goto send_status;
 	}
 
-	if (!BT_MESH_ADDR_IS_GROUP(sub_addr)) {
+	if (!BT_MESH_ADDR_IS_GROUP(sub_addr) && !BT_MESH_ADDR_IS_FIXED_GROUP(sub_addr)) {
 		status = STATUS_INVALID_ADDRESS;
 		goto send_status;
 	}
@@ -1117,7 +1117,7 @@ static int mod_sub_del(struct bt_mesh_model *model,
 		goto send_status;
 	}
 
-	if (!BT_MESH_ADDR_IS_GROUP(sub_addr)) {
+	if (!BT_MESH_ADDR_IS_GROUP(sub_addr) && !BT_MESH_ADDR_IS_FIXED_GROUP(sub_addr)) {
 		status = STATUS_INVALID_ADDRESS;
 		goto send_status;
 	}
@@ -1198,7 +1198,7 @@ static int mod_sub_overwrite(struct bt_mesh_model *model,
 		goto send_status;
 	}
 
-	if (!BT_MESH_ADDR_IS_GROUP(sub_addr)) {
+	if (!BT_MESH_ADDR_IS_GROUP(sub_addr) && !BT_MESH_ADDR_IS_FIXED_GROUP(sub_addr)) {
 		status = STATUS_INVALID_ADDRESS;
 		goto send_status;
 	}