diff --git a/hw/ip/otp_ctrl/dv/env/otp_ctrl_scoreboard.sv b/hw/ip/otp_ctrl/dv/env/otp_ctrl_scoreboard.sv
index d0ef817..9d2e31d 100644
--- a/hw/ip/otp_ctrl/dv/env/otp_ctrl_scoreboard.sv
+++ b/hw/ip/otp_ctrl/dv/env/otp_ctrl_scoreboard.sv
@@ -345,7 +345,6 @@
           // here only normalize to 2 lsb, if is secret, will be reduced further
           bit [TL_AW-1:0] dai_addr = `gmv(ral.direct_access_address) >> 2 << 2;
           int part_idx = get_part_index(dai_addr);
-          void'(ral.direct_access_regwen.predict(0));
           // LC partition cannot be access via DAI
           if (part_idx == LifeCycleIdx) begin
             predict_status_err(.dai_err(1));
@@ -420,6 +419,8 @@
                 `uvm_fatal(`gfn, $sformatf("invalid cmd: %0d", item.a_data))
               end
             endcase
+            // regwen is set to 0 only if the dai operation is successfully
+            if (`gmv(ral.intr_state.otp_error) == 0) void'(ral.direct_access_regwen.predict(0));
           end
         end
       end
diff --git a/hw/ip/otp_ctrl/dv/env/seq_lib/otp_ctrl_base_vseq.sv b/hw/ip/otp_ctrl/dv/env/seq_lib/otp_ctrl_base_vseq.sv
index 375edde..47e6325 100644
--- a/hw/ip/otp_ctrl/dv/env/seq_lib/otp_ctrl_base_vseq.sv
+++ b/hw/ip/otp_ctrl/dv/env/seq_lib/otp_ctrl_base_vseq.sv
@@ -16,6 +16,7 @@
 
   rand bit [NumOtpCtrlIntr-1:0] en_intr;
   bit [TL_AW-1:0] used_dai_addr_q[$];
+  bit is_valid_dai_op = 1;
 
   `uvm_object_new
 
@@ -69,7 +70,12 @@
     `uvm_info(`gfn, $sformatf("DAI write, address %0h, data0 %0h data1 %0h, is_secret = %0b",
               addr, wdata0, wdata1, is_secret(addr)), UVM_DEBUG)
 
-    if ($urandom_range(0, 1) && cfg.zero_delays) begin
+    // direct_access_regwen is set only when following conditions are met:
+    // - the dai operation is valid, otherwise it is hard to predict which cycle the error is
+    //   detected and regwen is set back to 1
+    // - zero delays in TLUL interface, otherwise dai operation might be finished before reading
+    //   this regwen CSR
+    if ($urandom_range(0, 1) && cfg.zero_delays && is_valid_dai_op) begin
       csr_rd(.ptr(ral.direct_access_regwen), .value(val));
     end
     csr_spinwait(ral.intr_state.otp_operation_done, 1);
@@ -84,7 +90,7 @@
     addr = randomize_dai_addr(addr);
     csr_wr(ral.direct_access_address, addr);
     csr_wr(ral.direct_access_cmd, int'(otp_ctrl_pkg::DaiRead));
-    if ($urandom_range(0, 1) && cfg.zero_delays) begin
+    if ($urandom_range(0, 1) && cfg.zero_delays && is_valid_dai_op) begin
       csr_rd(.ptr(ral.direct_access_regwen), .value(val));
     end
     csr_spinwait(ral.intr_state.otp_operation_done, 1);
@@ -111,7 +117,7 @@
     csr_wr(ral.direct_access_address, PART_BASE_ADDRS[part_idx]);
     csr_wr(ral.direct_access_cmd, otp_ctrl_pkg::DaiDigest);
 
-    if ($urandom_range(0, 1) && cfg.zero_delays) begin
+    if ($urandom_range(0, 1) && cfg.zero_delays && is_valid_dai_op) begin
       csr_rd(.ptr(ral.direct_access_regwen), .value(val));
     end
     csr_spinwait(ral.intr_state.otp_operation_done, 1);
diff --git a/hw/ip/otp_ctrl/dv/env/seq_lib/otp_ctrl_dai_errs_vseq.sv b/hw/ip/otp_ctrl/dv/env/seq_lib/otp_ctrl_dai_errs_vseq.sv
index 1e48c9f..f748f8c 100644
--- a/hw/ip/otp_ctrl/dv/env/seq_lib/otp_ctrl_dai_errs_vseq.sv
+++ b/hw/ip/otp_ctrl/dv/env/seq_lib/otp_ctrl_dai_errs_vseq.sv
@@ -6,7 +6,7 @@
 // - A writeblank error will be triggered if write to a non-empty address
 // - An access error will be triggered if write to lc partition via DAI interface, or if DAI write
 //   to digest addrs for non-sw partitions
-class otp_ctrl_dai_errs_vseq extends otp_ctrl_smoke_vseq;
+class otp_ctrl_dai_errs_vseq extends otp_ctrl_dai_lock_vseq;
   `uvm_object_utils(otp_ctrl_dai_errs_vseq)
 
   `uvm_object_new
@@ -24,6 +24,7 @@
     this.partition_index_c.constraint_mode(0);
     this.dai_wr_blank_addr_c.constraint_mode(0);
     this.no_access_err_c.constraint_mode(0);
+    this.num_iterations_up_to_num_valid_addr_c.constraint_mode(0);
     collect_used_addr = 0;
   endfunction
 
diff --git a/hw/ip/otp_ctrl/dv/env/seq_lib/otp_ctrl_dai_lock_vseq.sv b/hw/ip/otp_ctrl/dv/env/seq_lib/otp_ctrl_dai_lock_vseq.sv
index 28d31ac..a915a4c 100644
--- a/hw/ip/otp_ctrl/dv/env/seq_lib/otp_ctrl_dai_lock_vseq.sv
+++ b/hw/ip/otp_ctrl/dv/env/seq_lib/otp_ctrl_dai_lock_vseq.sv
@@ -16,4 +16,9 @@
   constraint num_iterations_up_to_num_valid_addr_c {
     num_trans * num_dai_op <= DAI_ADDR_SIZE;
   }
+
+  virtual task pre_start();
+    super.pre_start();
+    is_valid_dai_op = 0;
+  endtask
 endclass