diff --git a/src/main/java/com/romraider/logger/ecu/EcuLogger.java b/src/main/java/com/romraider/logger/ecu/EcuLogger.java
index 94c1ad55..0f4dc0b5 100644
--- a/src/main/java/com/romraider/logger/ecu/EcuLogger.java
+++ b/src/main/java/com/romraider/logger/ecu/EcuLogger.java
@@ -272,6 +272,7 @@ public final class EcuLogger extends AbstractFrame implements MessageListener {
     private final JLabel startText = new JLabel(" Initializing Logger...");
     private final String HOME = System.getProperty("user.home");
     private StatusIndicator statusIndicator;
+    private List<EcuSwitch> dtcodes = new ArrayList<EcuSwitch>();
 
     public EcuLogger(Settings settings) {
         super(ECU_LOGGER_TITLE);
@@ -523,6 +524,7 @@ public final class EcuLogger extends AbstractFrame implements MessageListener {
                 addConvertorUpdateListeners(ecuParams);
                 loadEcuParams(ecuParams);
                 loadEcuSwitches(dataLoader.getEcuSwitches());
+                dtcodes = dataLoader.getEcuCodes();
                 if (target.equals("ECU")) initFileLoggingController(dataLoader.getFileLoggingControllerSwitch());
                 settings.setLoggerConnectionProperties(dataLoader.getConnectionProperties());
                 if (dataLoader.getDefVersion() == null) {
diff --git a/src/main/java/com/romraider/logger/ecu/definition/EcuDataLoader.java b/src/main/java/com/romraider/logger/ecu/definition/EcuDataLoader.java
index d8d090d5..84399624 100644
--- a/src/main/java/com/romraider/logger/ecu/definition/EcuDataLoader.java
+++ b/src/main/java/com/romraider/logger/ecu/definition/EcuDataLoader.java
@@ -1,6 +1,6 @@
 /*
  * RomRaider Open-Source Tuning, Logging and Reflashing
- * Copyright (C) 2006-2012 RomRaider.com
+ * Copyright (C) 2006-2013 RomRaider.com
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -42,4 +42,6 @@ public interface EcuDataLoader {
     ConnectionProperties getConnectionProperties();
 
     String getDefVersion();
+
+    List<EcuSwitch> getEcuCodes();
 }
diff --git a/src/main/java/com/romraider/logger/ecu/definition/EcuDataLoaderImpl.java b/src/main/java/com/romraider/logger/ecu/definition/EcuDataLoaderImpl.java
index af8a1765..6a8dc9dd 100644
--- a/src/main/java/com/romraider/logger/ecu/definition/EcuDataLoaderImpl.java
+++ b/src/main/java/com/romraider/logger/ecu/definition/EcuDataLoaderImpl.java
@@ -1,6 +1,6 @@
 /*
  * RomRaider Open-Source Tuning, Logging and Reflashing
- * Copyright (C) 2006-2012 RomRaider.com
+ * Copyright (C) 2006-2013 RomRaider.com
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -42,6 +42,7 @@ public final class EcuDataLoaderImpl implements EcuDataLoader {
     private Map<String, EcuDefinition> ecuDefinitionMap = new HashMap<String, EcuDefinition>();
     private List<EcuParameter> ecuParameters = new ArrayList<EcuParameter>();
     private List<EcuSwitch> ecuSwitches = new ArrayList<EcuSwitch>();
+    private List<EcuSwitch> dtcodes = new ArrayList<EcuSwitch>();
     private EcuSwitch fileLoggingControllerSwitch;
     private ConnectionProperties connectionProperties;
     private String defVersion;
@@ -81,6 +82,7 @@ public final class EcuDataLoaderImpl implements EcuDataLoader {
                 fileLoggingControllerSwitch = handler.getFileLoggingControllerSwitch();
                 connectionProperties = handler.getConnectionProperties();
                 defVersion = handler.getVersion();
+                dtcodes = handler.getEcuCodes();
             } finally {
                 inputStream.close();
             }
@@ -117,4 +119,8 @@ public final class EcuDataLoaderImpl implements EcuDataLoader {
     public String getDefVersion() {
         return defVersion;
     }
+
+    public List<EcuSwitch> getEcuCodes() {
+        return dtcodes;
+    }
 }
diff --git a/src/main/java/com/romraider/logger/ecu/definition/xml/LoggerDefinitionHandler.java b/src/main/java/com/romraider/logger/ecu/definition/xml/LoggerDefinitionHandler.java
index dfbc0946..a6bbab70 100644
--- a/src/main/java/com/romraider/logger/ecu/definition/xml/LoggerDefinitionHandler.java
+++ b/src/main/java/com/romraider/logger/ecu/definition/xml/LoggerDefinitionHandler.java
@@ -67,6 +67,7 @@ public final class LoggerDefinitionHandler extends DefaultHandler {
     private static final String TAG_SWITCH = "switch";
     private static final String TAG_ECUPARAM = "ecuparam";
     private static final String TAG_ECU = "ecu";
+    private static final String TAG_DTCODE = "dtcode";
     private static final String ATTR_VERSION = "version";
     private static final String ATTR_ID = "id";
     private static final String ATTR_NAME = "name";
@@ -93,11 +94,14 @@ public final class LoggerDefinitionHandler extends DefaultHandler {
     private static final String ATTR_GAUGE_MAX = "gauge_max";
     private static final String ATTR_GAUGE_STEP = "gauge_step";
     private static final String ATTR_TARGET = "target";
+    private static final String ATTR_TMPADDR = "tmpaddr";
+    private static final String ATTR_MEMADDR = "memaddr";
     private final String protocol;
     private final String fileLoggingControllerSwitchId;
     private final EcuInit ecuInit;
     private List<EcuParameter> params = new ArrayList<EcuParameter>();
     private List<EcuSwitch> switches = new ArrayList<EcuSwitch>();
+    private List<EcuSwitch> dtcodes = new ArrayList<EcuSwitch>();
     private EcuSwitch fileLoggingControllerSwitch;
     private ConnectionProperties connectionProperties;
     private Map<String, EcuData> ecuDataMap;
@@ -140,6 +144,7 @@ public final class LoggerDefinitionHandler extends DefaultHandler {
         params = new ArrayList<EcuParameter>();
         switches = new ArrayList<EcuSwitch>();
         ecuDataMap = new HashMap<String, EcuData>();
+        dtcodes = new ArrayList<EcuSwitch>();
     }
 
     public void startElement(String uri, String localName, String qName, Attributes attributes) {
@@ -208,6 +213,17 @@ public final class LoggerDefinitionHandler extends DefaultHandler {
                 derived = false;
             } else if (TAG_ECU.equals(qName)) {
                 ecuIds = attributes.getValue(ATTR_ID);
+            } else if (TAG_DTCODE.equals(qName)) {
+                id = attributes.getValue(ATTR_ID);
+                name = attributes.getValue(ATTR_NAME);
+                desc = attributes.getValue(ATTR_DESC);
+                address = new EcuAddressImpl(
+                        new String[] {attributes.getValue(ATTR_TMPADDR),
+                                      attributes.getValue(ATTR_MEMADDR)
+                                     },
+                        1,
+                        Integer.valueOf(attributes.getValue(ATTR_BIT)));
+                resetLists();
             }
         }
         charBuffer = new StringBuilder();
@@ -288,6 +304,11 @@ public final class LoggerDefinitionHandler extends DefaultHandler {
                         fileLoggingControllerSwitch = new EcuSwitchImpl(id, name, desc, address, convertors);
                     }
                 }
+            } else if (TAG_DTCODE.equals(qName)) {
+                final EcuDataConvertor[] convertors = new EcuDataConvertor[]{new EcuSwitchConvertorImpl(address.getBit())};
+                final EcuSwitch ecuSwitch = new EcuSwitchImpl(id, name, desc, address, convertors);
+                dtcodes.add(ecuSwitch);
+                ecuDataMap.put(ecuSwitch.getId(), ecuSwitch);
             }
         }
     }
@@ -312,6 +333,10 @@ public final class LoggerDefinitionHandler extends DefaultHandler {
         return version;
     }
 
+    public List<EcuSwitch> getEcuCodes() {
+        return dtcodes;
+    }
+
     private void resetLists() {
         addrStrings.clear();
         EcuAddressCreated = false;