Index: firmware/App/Controllers/Pressures.c
===================================================================
diff -u -rebbb1f85550a1f9b8f946655f7b2b63f76fbf67d -r5a36a768d11cc597a36b894c1fb3a5e5590130f1
--- firmware/App/Controllers/Pressures.c	(.../Pressures.c)	(revision ebbb1f85550a1f9b8f946655f7b2b63f76fbf67d)
+++ firmware/App/Controllers/Pressures.c	(.../Pressures.c)	(revision 5a36a768d11cc597a36b894c1fb3a5e5590130f1)
@@ -35,7 +35,7 @@
 
 #define PUMP_PRESSURE_ZERO                          777                                             ///< ADC counts equivalent to 0 PSI for pump in/out pressure sensors.
 #define PUMP_PRESSURE_PSIA_PER_COUNT                0.06434                                         ///< PSIA per ADC count conversion factor for pump in/out pressure sensors.
-#define PUMP_PRESSURE_PSIA_TO_PSI_OFFSET            14.7                                            ///< Subtract this offset to convert PSIA to PSI.
+#define PUMP_PRESSURE_PSIA_TO_PSI_OFFSET            14.7                                            ///< Subtract this offset to convert PSIA to PSI.  TODO - use barometric sensor when available.
 
 #define PRESSURE_SAMPLES_TO_AVERAGE                 ( 200 / TASK_PRIORITY_INTERVAL )                ///< Averaging pressure data over the reporting interval.
 #define PRESSURE_AVERAGE_MULTIPLIER                 ( 1.0 / (F32)PRESSURE_SAMPLES_TO_AVERAGE )      ///< Optimization - multiplying is faster than dividing.
@@ -291,7 +291,7 @@
     }
     else
     {
-        activateAlarmNoData( ALARM_ID_DG_SOFTWARE_FAULT );
+        SET_ALARM_WITH_2_U32_DATA( ALARM_ID_DG_SOFTWARE_FAULT, SW_FAULT_ID_INVALID_PRESSURE_SENSOR_ID, pressureID );
     }
 
     return result;