Checking Diagnostic Trouble Code (DTC) Memory

DTCs stored in memory along with corresponding malfunction descriptions can only be displayed by initiating the On Board Diagnostic program and then checking DTC memory (function 02).

1. Connect VAG 1551 scan tool. See CONNECTING SCAN TOOL (VAG 1551)  .
2. Select operating mode 1 "Rapid data transfer."
3. Switch on ignition.
4. Enter address word 19, "Gateway."
5. Press "Q" button to confirm input.
6. Press right arrow button until "Select function" appears in display.
7. Switch on printer with the "PRINT" button (indicator lamp in button lights up).
8. Press buttons "0" and "2" to select "Check DTC memory" function 02.
9. Press "Q" button to confirm input.
10. The number of stored DTCs appears in the display. Stored DTCs are displayed and printed out one after another. If "No DTC recognized " is displayed, the program will return to the initial position after pressing right arrow button.
11. Check print-out against DTC table and repair all malfunctions as necessary. See DIAGNOSTIC TROUBLE CODES  .
12. End output. See END OUTPUT  .
13. Switch ignition off.
14. Disconnect VAG 1551 from Data Link Connector (DLC).