diff --git a/core/sap/src/sap_ch_select.c b/core/sap/src/sap_ch_select.c
index 281d2f00d85a..66414157c1fb 100644
--- a/core/sap/src/sap_ch_select.c
+++ b/core/sap/src/sap_ch_select.c
@@ -2107,6 +2107,56 @@ static void sap_sort_chl_weight_vht160(tSapChSelSpectInfo *pSpectInfoParams)
 	}
 }
 
+/**
+ * sap_allocate_max_weight_ht40_24_g() - allocate max weight for 40Mhz
+ *                                       to all 2.4Ghz channels
+ * @spect_info_params: Pointer to the tSapChSelSpectInfo structure
+ *
+ * Return: none
+ */
+static void sap_allocate_max_weight_ht40_24_g(
+			tSapChSelSpectInfo *spect_info_params)
+{
+	tSapSpectChInfo *spect_info;
+	uint8_t j;
+
+	/*
+	 * Assign max weight for 40Mhz (SAP_ACS_WEIGHT_MAX * 2) to all
+	 * 2.4 Ghz channels
+	 */
+	spect_info = spect_info_params->pSpectCh;
+	for (j = 0; j < spect_info_params->numSpectChans; j++) {
+		if ((spect_info[j].chNum >= WLAN_REG_CH_NUM(CHAN_ENUM_1) &&
+		     spect_info[j].chNum <= WLAN_REG_CH_NUM(CHAN_ENUM_14)))
+			spect_info[j].weight = SAP_ACS_WEIGHT_MAX * 2;
+	}
+}
+
+/**
+ * sap_allocate_max_weight_ht40_5_g() - allocate max weight for 40Mhz
+ *                                      to all 5Ghz channels
+ * @spect_info_params: Pointer to the tSapChSelSpectInfo structure
+ *
+ * Return: none
+ */
+static void sap_allocate_max_weight_ht40_5_g(
+			tSapChSelSpectInfo *spect_info_params)
+{
+	tSapSpectChInfo *spect_info;
+	uint8_t j;
+
+	/*
+	 * Assign max weight for 40Mhz (SAP_ACS_WEIGHT_MAX * 2) to all
+	 * 5 Ghz channels
+	 */
+	spect_info = spect_info_params->pSpectCh;
+	for (j = 0; j < spect_info_params->numSpectChans; j++) {
+		if ((spect_info[j].chNum >= WLAN_REG_CH_NUM(CHAN_ENUM_36) &&
+		     spect_info[j].chNum <= WLAN_REG_CH_NUM(CHAN_ENUM_165)))
+			spect_info[j].weight = SAP_ACS_WEIGHT_MAX * 2;
+	}
+}
+
 /**
  * sap_sort_chl_weight_ht40_24_g() - to sort channel with the least weight
  * @pSpectInfoParams: Pointer to the tSapChSelSpectInfo structure
@@ -2232,6 +2282,16 @@ static void sap_sort_chl_weight_ht40_24_g(tSapChSelSpectInfo *pSpectInfoParams,
 				pSpectInfo[j].weight = SAP_ACS_WEIGHT_MAX * 2;
 		}
 	}
+
+	pSpectInfo = pSpectInfoParams->pSpectCh;
+	for (j = 0; j < (pSpectInfoParams->numSpectChans); j++) {
+		QDF_TRACE(QDF_MODULE_ID_SAP, QDF_TRACE_LEVEL_INFO_HIGH,
+			  "In %s, Channel=%d Weight= %d rssi=%d bssCount=%d",
+			  __func__, pSpectInfo->chNum, pSpectInfo->weight,
+			  pSpectInfo->rssiAgr, pSpectInfo->bssCount);
+		pSpectInfo++;
+	}
+
 	sap_sort_chl_weight(pSpectInfoParams);
 }
 
@@ -2369,12 +2429,16 @@ static void sap_sort_chl_weight_all(struct sap_context *sap_ctx,
 
 	switch (sap_ctx->acs_cfg->ch_width) {
 	case CH_WIDTH_40MHZ:
-		if (eCSR_DOT11_MODE_11g == operatingBand)
-			sap_sort_chl_weight_ht40_24_g(pSpectInfoParams, domain);
-		else if (eCSR_DOT11_MODE_11a == operatingBand)
-			sap_sort_chl_weight_ht40_5_g(pSpectInfoParams);
-		else {
+		/*
+		 * Assign max weight to all 5Ghz channels when operating band
+		 * is 11g and to all 2.4Ghz channels when operating band is 11a
+		 * or 11abg to avoid selection in ACS algorithm for starting SAP
+		 */
+		if (eCSR_DOT11_MODE_11g == operatingBand) {
 			sap_sort_chl_weight_ht40_24_g(pSpectInfoParams, domain);
+			sap_allocate_max_weight_ht40_5_g(pSpectInfoParams);
+		} else {
+			sap_allocate_max_weight_ht40_24_g(pSpectInfoParams);
 			sap_sort_chl_weight_ht40_5_g(pSpectInfoParams);
 		}
 		break;
diff --git a/core/sap/src/sap_fsm.c b/core/sap/src/sap_fsm.c
index 7c2de758fd03..3fa2168fec89 100644
--- a/core/sap/src/sap_fsm.c
+++ b/core/sap/src/sap_fsm.c
@@ -3210,6 +3210,7 @@ static QDF_STATUS sap_get_channel_list(struct sap_context *sap_ctx,
 #endif
 	tpAniSirGlobal mac_ctx = PMAC_STRUCT(hal);
 	tSapChSelSpectInfo spect_info_obj = { NULL, 0 };
+	uint16_t ch_width;
 
 	if (NULL == hal) {
 		QDF_TRACE(QDF_MODULE_ID_SAP, QDF_TRACE_LEVEL_ERROR,
@@ -3221,10 +3222,11 @@ static QDF_STATUS sap_get_channel_list(struct sap_context *sap_ctx,
 
 	start_ch_num = sap_ctx->acs_cfg->start_ch;
 	end_ch_num = sap_ctx->acs_cfg->end_ch;
+	ch_width = sap_ctx->acs_cfg->ch_width;
 	QDF_TRACE(QDF_MODULE_ID_SAP, QDF_TRACE_LEVEL_INFO,
-			FL("startChannel %d, EndChannel %d, HW:%d"),
-			start_ch_num, end_ch_num,
-			sap_ctx->acs_cfg->hw_mode);
+		  FL("startChannel %d, EndChannel %d, ch_width %d, HW:%d"),
+		     start_ch_num, end_ch_num, ch_width,
+		     sap_ctx->acs_cfg->hw_mode);
 
 	wlansap_extend_to_acs_range(hal, &start_ch_num, &end_ch_num,
 					    &band_start_ch, &band_end_ch);
@@ -3287,6 +3289,26 @@ static QDF_STATUS sap_get_channel_list(struct sap_context *sap_ctx,
 				sap_ctx, &spect_info_obj))
 			continue;
 
+		/*
+		 * If we have any 5Ghz channel in the channel list
+		 * and bw is 40/80/160 Mhz then we don't want SAP to
+		 * come up in 2.4Ghz as for 40Mhz, 2.4Ghz channel is
+		 * not preferred and 80/160Mhz is not allowed for 2.4Ghz
+		 * band. So, don't even scan on 2.4Ghz channels if bw is
+		 * 40/80/160Mhz and channel list has any 5Ghz channel.
+		 */
+		if (end_ch_num >= WLAN_REG_CH_NUM(CHAN_ENUM_36) &&
+		    ((ch_width == CH_WIDTH_40MHZ) ||
+		     (ch_width == CH_WIDTH_80MHZ) ||
+		     (ch_width == CH_WIDTH_80P80MHZ) ||
+		     (ch_width == CH_WIDTH_160MHZ))) {
+			if (WLAN_REG_CH_NUM(loop_count) >=
+			    WLAN_REG_CH_NUM(CHAN_ENUM_1) &&
+			    WLAN_REG_CH_NUM(loop_count) <=
+			    WLAN_REG_CH_NUM(CHAN_ENUM_14))
+				continue;
+		}
+
 #ifdef FEATURE_WLAN_CH_AVOID
 		for (i = 0; i < NUM_CHANNELS; i++) {
 			if (safe_channels[i].channelNumber ==