Index: firmware/App/Controllers/Pressures.c
===================================================================
diff -u -rf4b5b298875110e08a5fbe928a6ecbd3ab4e0a41 -r1deb74eaecd54af89ad6faf8f27ddd05bc8783ae
--- firmware/App/Controllers/Pressures.c	(.../Pressures.c)	(revision f4b5b298875110e08a5fbe928a6ecbd3ab4e0a41)
+++ firmware/App/Controllers/Pressures.c	(.../Pressures.c)	(revision 1deb74eaecd54af89ad6faf8f27ddd05bc8783ae)
@@ -37,7 +37,7 @@
 
 // ********** private definitions **********
 
-#define PUMP_PRESSURE_ZERO                          777                                             ///< ADC counts equivalent to 0 PSI for pump in/out pressure sensors.
+#define PUMP_PRESSURE_ZERO                          759                                             ///< ADC counts equivalent to 0 PSI for pump in/out pressure sensors.
 #define PUMP_PRESSURE_PSIA_PER_COUNT                0.06583F                                        ///< PSIA per ADC count conversion factor for pump in/out pressure sensors.
 #define PUMP_PRESSURE_PSIA_TO_PSI_OFFSET            14.7F                                           ///< Subtract this offset to convert PSIA to PSI.
 #define ONE_BAR_TO_PSI_CONVERSION                   14.5F                                           ///< 1 bar to PSI conversion.