diff --git a/boards/ark/fmu-v6x/init/rc.board_sensors b/boards/ark/fmu-v6x/init/rc.board_sensors
index 84f985cecbc8..b87dd9a014f6 100644
--- a/boards/ark/fmu-v6x/init/rc.board_sensors
+++ b/boards/ark/fmu-v6x/init/rc.board_sensors
@@ -3,10 +3,12 @@
 # ARK FMUARKV6X specific board sensors init
 #------------------------------------------------------------------------------
 set HAVE_PM2 yes
+set HAVE_PM3 yes
 
 if ver hwtypecmp ARKV6X005000 ARKV6X005001 ARKV6X005002 ARKV6X005003 ARKV6X005004
 then
 	set HAVE_PM2 no
+	set HAVE_PM3 no
 fi
 
 if param compare -s ADC_ADS1115_EN 1
@@ -25,26 +27,43 @@ then
 	then
 		ina226 -X -b 2 -t 2 -k start
 	fi
+
+	if [ $HAVE_PM3 = yes ]
+	then
+		ina226 -X -b 3 -t 2 -k start
+	fi
 fi
 
 if param compare SENS_EN_INA228 1
 then
 	# Start Digital power monitors
 	ina228 -X -b 1 -t 1 -k start
+
 	if [ $HAVE_PM2 = yes ]
 	then
 		ina228 -X -b 2 -t 2 -k start
 	fi
+
+	if [ $HAVE_PM3 = yes ]
+	then
+		ina228 -X -b 3 -t 2 -k start
+	fi
 fi
 
 if param compare SENS_EN_INA238 1
 then
 	# Start Digital power monitors
 	ina238 -X -b 1 -t 1 -k start
+
 	if [ $HAVE_PM2 = yes ]
 	then
 		ina238 -X -b 2 -t 2 -k start
 	fi
+
+	if [ $HAVE_PM3 = yes ]
+	then
+		ina238 -X -b 3 -t 2 -k start
+	fi
 fi
 
 # Internal SPI bus IIM42652 with SPIX measured frequency of 32.051kHz
@@ -63,3 +82,4 @@ bmm150 -I start
 bmp388 -I start
 
 unset HAVE_PM2
+unset HAVE_PM3