diff --git a/thread/framework/java/android/net/thread/ThreadNetworkException.java b/thread/framework/java/android/net/thread/ThreadNetworkException.java
index 23ed53e..66f13ce 100644
--- a/thread/framework/java/android/net/thread/ThreadNetworkException.java
+++ b/thread/framework/java/android/net/thread/ThreadNetworkException.java
@@ -137,11 +137,29 @@
      */
     public static final int ERROR_THREAD_DISABLED = 12;
 
+    private static final int ERROR_MIN = ERROR_INTERNAL_ERROR;
+    private static final int ERROR_MAX = ERROR_THREAD_DISABLED;
+
     private final int mErrorCode;
 
-    /** Creates a new {@link ThreadNetworkException} object with given error code and message. */
-    public ThreadNetworkException(@ErrorCode int errorCode, @NonNull String errorMessage) {
-        super(requireNonNull(errorMessage, "errorMessage cannot be null"));
+    /**
+     * Creates a new {@link ThreadNetworkException} object with given error code and message.
+     *
+     * @throws IllegalArgumentException if {@code errorCode} is not a value in {@link #ERROR_}
+     * @throws NullPointerException if {@code message} is {@code null}
+     */
+    public ThreadNetworkException(@ErrorCode int errorCode, @NonNull String message) {
+        super(requireNonNull(message, "message cannot be null"));
+        if (errorCode < ERROR_MIN || errorCode > ERROR_MAX) {
+            throw new IllegalArgumentException(
+                    "errorCode cannot be "
+                            + errorCode
+                            + " (allowedRange = ["
+                            + ERROR_MIN
+                            + ", "
+                            + ERROR_MAX
+                            + "])");
+        }
         this.mErrorCode = errorCode;
     }
 
diff --git a/thread/tests/cts/src/android/net/thread/cts/ThreadNetworkExceptionTest.java b/thread/tests/cts/src/android/net/thread/cts/ThreadNetworkExceptionTest.java
new file mode 100644
index 0000000..6770175
--- /dev/null
+++ b/thread/tests/cts/src/android/net/thread/cts/ThreadNetworkExceptionTest.java
@@ -0,0 +1,64 @@
+/*
+ * Copyright (C) 2023 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.net.thread.cts;
+
+import static android.net.thread.ThreadNetworkException.ERROR_INTERNAL_ERROR;
+import static android.net.thread.ThreadNetworkException.ERROR_THREAD_DISABLED;
+import static android.net.thread.ThreadNetworkException.ERROR_UNKNOWN;
+
+import static com.google.common.truth.Truth.assertThat;
+
+import static org.junit.Assert.assertThrows;
+
+import android.net.thread.ThreadNetworkException;
+
+import androidx.test.ext.junit.runners.AndroidJUnit4;
+import androidx.test.filters.SmallTest;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+/** Tests for {@link ThreadNetworkException}. */
+@SmallTest
+@RunWith(AndroidJUnit4.class)
+public final class ThreadNetworkExceptionTest {
+    @Test
+    public void constructor_validValues_valuesAreConnectlySet() throws Exception {
+        ThreadNetworkException errorThreadDisabled =
+                new ThreadNetworkException(ERROR_THREAD_DISABLED, "Thread disabled error!");
+        ThreadNetworkException errorInternalError =
+                new ThreadNetworkException(ERROR_INTERNAL_ERROR, "internal error!");
+
+        assertThat(errorThreadDisabled.getErrorCode()).isEqualTo(ERROR_THREAD_DISABLED);
+        assertThat(errorThreadDisabled.getMessage()).isEqualTo("Thread disabled error!");
+        assertThat(errorInternalError.getErrorCode()).isEqualTo(ERROR_INTERNAL_ERROR);
+        assertThat(errorInternalError.getMessage()).isEqualTo("internal error!");
+    }
+
+    @Test
+    public void constructor_nullMessage_throwsNullPointerException() throws Exception {
+        assertThrows(
+                NullPointerException.class,
+                () -> new ThreadNetworkException(ERROR_UNKNOWN, null /* message */));
+    }
+
+    @Test
+    public void constructor_invalidErrorCode_throwsIllegalArgumentException() throws Exception {
+        assertThrows(IllegalArgumentException.class, () -> new ThreadNetworkException(0, "0"));
+        assertThrows(IllegalArgumentException.class, () -> new ThreadNetworkException(13, "13"));
+    }
+}