diff --git a/lib_com/options.h b/lib_com/options.h
index 0e6f20b90ca0886873f9ffd55c56063b7009313d..59daf40a861b119e176179d27d553536838fa14d 100644
--- a/lib_com/options.h
+++ b/lib_com/options.h
@@ -171,7 +171,7 @@
 #define FIX_1435_MOVE_STEREO_PANNING                    /* VA: issue 1435: do the EVS stereo panning in the renderer */
 #define FIX_1454_FIX_STEREO_TO_FOA_JBM                  /* VA: issue 1454: fix buggy stereo to FOA in JBM */
 #define FIX_1461_CNG_BW_SWITCHING                       /* Eri: issue 1461: Stereo parameters are not updated when SID/NODATA forces BW to stay the same */
-
+#define FIX_2252_LP_CNG_STARTS_SID                      /* VA: issues 2251 and 2252: fix LP CNG uninitialized value in bitstream that starts with an SID */
 
 /* ##################### End NON-BE switches ########################### */
 
diff --git a/lib_dec/decision_matrix_dec.c b/lib_dec/decision_matrix_dec.c
index 0cc8b6e57ce58663048f31b02b572a7a4cc93cb8..4329099e62ef5c2157c23877d5fa570458237589 100644
--- a/lib_dec/decision_matrix_dec.c
+++ b/lib_dec/decision_matrix_dec.c
@@ -101,6 +101,10 @@ void decision_matrix_dec(
                     if ( get_next_indice( st, 1 ) == 1 )
                     {
                         st->L_frame = L_FRAME16k;
+#ifdef FIX_2252_LP_CNG_STARTS_SID
+                        st->nb_subfr = NB_SUBFR16k;
+                        st->bwidth = max( st->bwidth, WB );
+#endif
                     }
                 }
                 else
diff --git a/lib_dec/init_dec.c b/lib_dec/init_dec.c
index c2582a22d7964ed93fae70515881292cb655cc13..f13748c54b2f6d5df47f9b9a06a42801c521867d 100644
--- a/lib_dec/init_dec.c
+++ b/lib_dec/init_dec.c
@@ -79,8 +79,26 @@ ivas_error init_decoder(
     st->last_total_brate_ber = -1;
     st->core_brate = ACELP_8k00;
     st->ini_frame = 0;
+#ifdef FIX_2252_LP_CNG_STARTS_SID
+    if ( st->element_mode == EVS_MONO )
+    {
+        st->bwidth = NB;
+        st->last_bwidth = NB;
+    }
+    else
+    {
+#if 0 // keep deactivated for the moment to keep BE
+        st->bwidth = WB;
+        st->last_bwidth = WB;
+#else
+        st->bwidth = NB;
+        st->last_bwidth = NB;
+#endif
+    }
+#else
     st->bwidth = NB;
     st->last_bwidth = NB;
+#endif
     st->extl_brate = 0;
 
     st->coder_type = GENERIC;
diff --git a/lib_dec/ivas_decision_matrix_dec.c b/lib_dec/ivas_decision_matrix_dec.c
index 0de93e137040f1f80a626af6d5add91a57547e72..0157823adf7144cff50beb069e32d1fc55c35fbc 100644
--- a/lib_dec/ivas_decision_matrix_dec.c
+++ b/lib_dec/ivas_decision_matrix_dec.c
@@ -95,6 +95,10 @@ void ivas_decision_matrix_dec(
             if ( get_next_indice( st, 1 ) )
             {
                 st->L_frame = L_FRAME16k;
+#ifdef FIX_2252_LP_CNG_STARTS_SID
+                st->nb_subfr = NB_SUBFR16k;
+                st->bwidth = max( st->bwidth, WB );
+#endif
             }
             else
             {