Index: leahi_dialin/fp/modules/temperatures.py
===================================================================
diff -u -r4c41400037a9da1afe303601bd960b30de3d79da -ra2aad87f17d5f85922b458ca2b73d20fb4f49c3a
--- leahi_dialin/fp/modules/temperatures.py	(.../temperatures.py)	(revision 4c41400037a9da1afe303601bd960b30de3d79da)
+++ leahi_dialin/fp/modules/temperatures.py	(.../temperatures.py)	(revision a2aad87f17d5f85922b458ca2b73d20fb4f49c3a)
@@ -18,7 +18,7 @@
 from logging import Logger
 
 from .constants import NO_RESET, RESET
-from leahi_dialin.common.fp_defs import FPTemperaturesNames
+from leahi_dialin.common.fp_defs import FPTemperaturesNames, BETA_CONDUCTIVITY_SENSOR_OFFSET, BETA_FLOW_SENSOR_OFFSET, BETA_IO_PRES_SENSOR_OFFSET, BETA_FP_PRES_SENSOR_OFFSET
 from leahi_dialin.common.msg_defs import MsgIds, MsgFieldPositions
 from leahi_dialin.protocols.CAN import DenaliMessage, DenaliChannels
 from leahi_dialin.utils.base import AbstractSubSystem, publish, DialinEnum
@@ -141,24 +141,39 @@
         """
         rst = integer_to_bytearray(reset)
         value = float_to_bytearray(sensor_value)
-        index = integer_to_bytearray(sensor_index)
-        payload = rst + value + index
 
-        if sensor_index <= FPTemperaturesNames.P19_TEMP.value:
+        # FP Conductivity Sensors' Temperature Override
+        if FPTemperaturesNames.P10_TEMP.value <= sensor_index <= FPTemperaturesNames.P19_TEMP.value:
+            index = integer_to_bytearray(sensor_index + BETA_CONDUCTIVITY_SENSOR_OFFSET)
+            payload = rst + value + index
             message = DenaliMessage.build_message(channel_id=DenaliChannels.dialin_to_fp_ch_id,
                                                   message_id=MsgIds.MSG_ID_FP_CONDUCTIVITY_TEMP_OVERRIDE_REQUEST.value,
                                                   payload=payload)
 
+        # FP Flow Sensors' Temperature Override
         elif FPTemperaturesNames.P7_TEMP.value <= sensor_index < FPTemperaturesNames.NUM_OF_TEMPERATURE_SENSORS.value:
+            index = integer_to_bytearray(sensor_index - BETA_FLOW_SENSOR_OFFSET)
+            payload = rst + value + index
             message = DenaliMessage.build_message(channel_id=DenaliChannels.dialin_to_fp_ch_id,
                                                   message_id=MsgIds.MSG_ID_FP_FLOW_TEMP_OVERRIDE_REQUEST.value,
                                                   payload=payload)
 
-        else: # the remaining sensors are sent to the pressure temp override
+        # IO Pressure Sensors' Temperature Override
+        elif FPTemperaturesNames.M1_TEMP.value <= sensor_index <= FPTemperaturesNames.M3_TEMP.value:
+            index = integer_to_bytearray(sensor_index + BETA_IO_PRES_SENSOR_OFFSET)
+            payload = rst + value + index
             message = DenaliMessage.build_message(channel_id=DenaliChannels.dialin_to_fp_ch_id,
                                                   message_id=MsgIds.MSG_ID_FP_PRESSURE_TEMP_OVERRIDE_REQUEST.value,
                                                   payload=payload)
 
+        # FP Pressure Sensors' Temperature Override
+        else:
+            index = integer_to_bytearray(sensor_index + BETA_FP_PRES_SENSOR_OFFSET)
+            payload = rst + value + index
+            message = DenaliMessage.build_message(channel_id=DenaliChannels.dialin_to_fp_ch_id,
+                                                  message_id=MsgIds.MSG_ID_FP_PRESSURE_TEMP_OVERRIDE_REQUEST.value,
+                                                  payload=payload)
+
         self.logger.debug("Setting sensor {} to {} C".format(list(self.fp_temperatures.keys())[sensor_index], sensor_value))
 
         # Send message