Index: firmware/App/Modes/ModePreTreat.c
===================================================================
diff -u -rc965df576088a9b2eb23d826f8f7e9f03d1bc962 -r1662b3ac21c7d19e218efbe44a25285778e8ea2b
--- firmware/App/Modes/ModePreTreat.c	(.../ModePreTreat.c)	(revision c965df576088a9b2eb23d826f8f7e9f03d1bc962)
+++ firmware/App/Modes/ModePreTreat.c	(.../ModePreTreat.c)	(revision 1662b3ac21c7d19e218efbe44a25285778e8ea2b)
@@ -385,6 +385,11 @@
         state = HD_PRE_TREATMENT_CART_INSTALL_STATE;
     }
 
+    if ( ( TRUE == isAlarmActive( ALARM_ID_CARTRIDGE_INSTALLED_IMPROPERLY ) ) || ( TRUE == isAlarmActive( ALARM_ID_INSTALL_NEW_CARTRIDGE ) ) )
+    {
+        state = HD_PRE_TREATMENT_CART_INSTALL_STATE;
+    }
+
     if ( TRUE == isDrySelfTestsPassed() )
     {
         transitionToPrime();
Index: firmware/App/Modes/Prime.c
===================================================================
diff -u -rd52b27c2797b07f6aba2e05c8ba24156b820fdbc -r1662b3ac21c7d19e218efbe44a25285778e8ea2b
--- firmware/App/Modes/Prime.c	(.../Prime.c)	(revision d52b27c2797b07f6aba2e05c8ba24156b820fdbc)
+++ firmware/App/Modes/Prime.c	(.../Prime.c)	(revision 1662b3ac21c7d19e218efbe44a25285778e8ea2b)
@@ -648,6 +648,7 @@
     {
         if ( TRUE == didTimeout( loadcellSteadyVolumeStartTime, MIN_LOAD_CELL_STEADY_VOLUME_TIME ) )
         {
+            transitionToWetSelfTests();
             state = HD_PRIME_WET_SELF_TESTS_STATE;
         }
     }
Index: firmware/App/Modes/SelfTests.c
===================================================================
diff -u -r6417c75d0c2a9643bcdb797065dbcde59e1dc734 -r1662b3ac21c7d19e218efbe44a25285778e8ea2b
--- firmware/App/Modes/SelfTests.c	(.../SelfTests.c)	(revision 6417c75d0c2a9643bcdb797065dbcde59e1dc734)
+++ firmware/App/Modes/SelfTests.c	(.../SelfTests.c)	(revision 1662b3ac21c7d19e218efbe44a25285778e8ea2b)
@@ -38,6 +38,13 @@
 #define BLOOD_LEAK_SELF_TEST_SET                0x1                         ///< Initiate blood leak self-test.
 #define BLOOD_LEAK_NORMAL_OPERATION             0x0                         ///< Return blood leak to normal operation.
 
+#define BLOOD_PUMP_RUN_TIME_PRESSURE_SELF_TEST  ( 5 * MS_PER_SECOND )       ///< Pressure self-test time to run blood pump in ms.
+
+#define ARTERIAL_PRESSURE_SELF_TEST_LOW_LIMIT   -50.0                       ///< Arterial pressure low limit after running blood pump.
+#define VENOUS_PRESSURE_SELF_TEST_HIGH_LIMIT    400                         ///< Venous pressure high limit after running blood pump.
+
+#define NORMAL_PRESSURE_DIFF_TOLERANCE          5                           ///< Difference in pressure readings after return to normal state tolerance (in mmHg).
+
 /// No cartridge self-tests state machine.
 typedef enum No_Cart_Self_Tests_State
 {
@@ -61,9 +68,12 @@
 typedef enum Dry_Self_Tests_state
 {
     DRY_SELF_TESTS_START_STATE = 0,                         ///< Dry self-tests starting state.
-    DRY_SELF_TESTS_BUBBLE_DETECTOR_STATE,                   ///< Bubble detectors dry self-tests state.
-    DRY_SELF_TESTS_AIR_TRAP_STATE,                          ///< Air trap fill level ultrasonic sensor dry self-tests state.
-    DRY_SELF_TESTS_OCCLUSION_SENSORS_STATE,                 ///< Occlusion sensors dry self-tests state.
+    DRY_SELF_TESTS_BUBBLE_DETECTOR_STATE,                   ///< Bubble detectors dry self-test state.
+    DRY_SELF_TESTS_AIR_TRAP_STATE,                          ///< Air trap fill level ultrasonic sensor dry self-test state.
+    DRY_SELF_TESTS_OCCLUSION_SENSORS_STATE,                 ///< Occlusion sensors dry self-test state.
+    DRY_SELF_TESTS_PRESSURE_SENSORS_SETUP_STATE,            ///< Pressure sensors dry self-test setup valves and pump state.
+    DRY_SELF_TESTS_PRESSURE_SENSORS_STATE,                  ///< Pressure sensors verify pressure readings state.
+    DRY_SELF_TESTS_PRESSURE_SENSORS_NORMAL_STATE,           ///< Preassure sensors verify normal pressure readings state.
     DRY_SELF_TESTS_COMPLETE,                                ///< Dry self-test complete state.
     NUM_OF_DRY_SELF_TESTS_STATES                            ///< Number of dry self-tests states.
 } DRY_SELF_TESTS_STATE_T;
@@ -86,6 +96,9 @@
 
 static BOOL drySelfTestsResult;                                     ///< Result of dry self-tests.
 static DRY_SELF_TESTS_STATE_T currentDrySelfTestsState;             ///< Current state of the dry self-tests state machine.
+static U32 pressureSelfTestBloodPumpRunStartTime;                   ///< Pressure dry self-test blood pump runs start time.
+static F32 previousNormalArterialPressure;                          ///< Holds the previous normal arterial pressure reading.
+static F32 previousNormalVenousPressure;                            ///< Holds the previous normal venous pressure reading.
 
 static BOOL wetSelfTestsResult;                                     ///< Result of wet self-tests.
 static WET_SELF_TESTS_STATE_T currentWetSelfTestsState;             ///< Current state of the wet self-tests state machine.
@@ -269,6 +282,8 @@
  *************************************************************************/
 void execDrySelfTests( void )
 {
+    SELF_TEST_STATUS_T result = SELF_TEST_STATUS_PASSED;
+
     // execute dry self-tests state machine
     switch ( currentDrySelfTestsState )
     {
@@ -310,7 +325,7 @@
 
                 if ( SELF_TEST_STATUS_PASSED == result )
                 {
-                    currentDrySelfTestsState = DRY_SELF_TESTS_COMPLETE;
+                    currentDrySelfTestsState = DRY_SELF_TESTS_PRESSURE_SENSORS_SETUP_STATE;
                 }
                 else
                 {
@@ -319,6 +334,58 @@
             }
             break;
 
+        case DRY_SELF_TESTS_PRESSURE_SENSORS_SETUP_STATE:
+            previousNormalArterialPressure = getMeasuredArterialPressure();
+            previousNormalVenousPressure = getMeasuredVenousPressure();
+
+            setValvePosition( VDI, VALVE_POSITION_C_CLOSE );
+            setValvePosition( VDO, VALVE_POSITION_C_CLOSE );
+            setValvePosition( VBA, VALVE_POSITION_B_OPEN );
+            setValvePosition( VBV, VALVE_POSITION_C_CLOSE );
+            setValveAirTrap( STATE_CLOSED );
+            setBloodPumpTargetFlowRate( PUMP_SELF_TEST_FLOW_RATE, MOTOR_DIR_FORWARD, PUMP_CONTROL_MODE_OPEN_LOOP );
+            pressureSelfTestBloodPumpRunStartTime = getMSTimerCount();
+
+            currentDrySelfTestsState = DRY_SELF_TESTS_PRESSURE_SENSORS_STATE;
+            break;
+
+        case DRY_SELF_TESTS_PRESSURE_SENSORS_STATE:
+            {
+                F32 const arterialPressure = getMeasuredArterialPressure();
+                F32 const venousPressure = getMeasuredVenousPressure();
+                if ( ( TRUE == didTimeout( pressureSelfTestBloodPumpRunStartTime, BLOOD_PUMP_RUN_TIME_PRESSURE_SELF_TEST ) ) ||
+                     ( ARTERIAL_PRESSURE_SELF_TEST_LOW_LIMIT >= arterialPressure ) || ( VENOUS_PRESSURE_SELF_TEST_HIGH_LIMIT <= venousPressure ) )
+                {
+                    if ( ( arterialPressure < 0) && ( venousPressure > 0 ) )
+                    {
+                        setValvePosition( VBV, VALVE_POSITION_B_OPEN );
+                        setValveAirTrap( STATE_CLOSED );
+                        currentDrySelfTestsState = DRY_SELF_TESTS_PRESSURE_SENSORS_NORMAL_STATE;
+                    }
+                    else
+                    {
+                        result = SELF_TEST_STATUS_FAILED;
+                    }
+                }
+            }
+            break;
+
+        case DRY_SELF_TESTS_PRESSURE_SENSORS_NORMAL_STATE:
+            {
+                F32 const arterialPressureDiff = fabs( getMeasuredArterialPressure() - previousNormalArterialPressure);
+                F32 const venousPressureDiff = fabs( getMeasuredVenousPressure() - previousNormalVenousPressure);
+
+                if ( ( arterialPressureDiff <= NORMAL_PRESSURE_DIFF_TOLERANCE ) && ( venousPressureDiff <= NORMAL_PRESSURE_DIFF_TOLERANCE ) )
+                {
+                    currentDrySelfTestsState = DRY_SELF_TESTS_COMPLETE;
+                }
+                else
+                {
+                    result = SELF_TEST_STATUS_FAILED;
+                }
+            }
+            break;
+
         case DRY_SELF_TESTS_COMPLETE:
             drySelfTestsResult = TRUE;
             break;
@@ -328,6 +395,11 @@
             SET_ALARM_WITH_2_U32_DATA( ALARM_ID_HD_SOFTWARE_FAULT, SW_FAULT_ID_HD_INVALID_DRY_SELF_TEST_STATE, (U32)currentDrySelfTestsState );
             break;
     }
+
+    if ( SELF_TEST_STATUS_FAILED == result )
+    {
+        SET_ALARM_WITH_1_U32_DATA( ALARM_ID_PRE_TREATMENT_SELF_TEST_FAILURE, currentDrySelfTestsState );
+    }
 }
 
 /*********************************************************************//**