diff --git a/CanUds.c b/CanUds.c
index dfc45a8..74cc218 100644
--- a/CanUds.c
+++ b/CanUds.c
@@ -519,6 +519,22 @@ static uint16_t CommunicationControl_28(tCanUds *env) {
 // начало --------------------------- Функции -------------------------------------------------------------
 // начало --------------------------- Функции -------------------------------------------------------------
 
+static uint16_t vUDS_check_Programming_Preconditions(tCanUds *env, eUdsRoutineControlType udsRoutineControlType) {
+
+eUdsRoutineStartStopRoutineResult udsStartStopRoutineResult = UDS_routine_RoutineStartStopSuccess;
+eUdsRequestRoutineResult udsRequestRoutineResult = UDS_routine_RoutineStop;
+
+if ((udsRoutineControlType == UDS_routine_StartRoutine) || (udsRoutineControlType == UDS_routine_StopRoutine)) {
+env->dataResponse[4] = udsStartStopRoutineResult;
+}
+
+if (udsRoutineControlType == UDS_routine_RequestRoutineResults) {
+env->dataResponse[4] = udsRequestRoutineResult;
+}
+
+return 4 + 1;
+}
+
 static uint16_t vUDS_routine_VIN_learn(tCanUds *env, eUdsRoutineControlType udsRoutineControlType) {
 
     eUdsRoutineStartStopRoutineResult udsStartStopRoutineResult = UDS_routine_RoutineStartStopSuccess;
@@ -627,6 +643,8 @@ static uint16_t Routine_Control_31(tCanUds *env) {
     env->dataResponse[3] = routineIdentifier_lo;
 
     switch (routineIdentifier) {
+        case Check_Programming_Preconditions:
+            return vUDS_check_Programming_Preconditions(env, udsRoutineControlType);
         case UDS_routine_VIN_learn:
             return vUDS_routine_VIN_learn(env, udsRoutineControlType);
         case UDS_routine_Compare_Checksum:
diff --git a/CanUds.h b/CanUds.h
index 163184e..b79fbcb 100644
--- a/CanUds.h
+++ b/CanUds.h
@@ -94,6 +94,7 @@ typedef enum {
 } eUdsRoutineControlType;
 
 typedef enum {
+    Check_Programming_Preconditions = 0x0203,
     UDS_routine_VIN_learn = 0x1300,
     UDS_routine_Compare_Checksum = 0x0202,
     UDS_routine_Erase_Memory = 0xFF00,