Reading Diagnostic Trouble Codes

NOTE: The displayed DTC information is updated only when initiating OBD or with "Erase DTC Memory" function 05.


- Switch printer on by pressing PRINT button (indicator light in button comes on).

Indicated on display


Rapid data transfer HELP
Select function XX


- Press buttons -0- and -2- to select "Check DTC Memory" function 02.

Indicated on display


Rapid data transfer Q
02 - Check DTC Memory


- Press -Q- button to confirm input.

The number of stored DTCs appears in the display.


X DTC recognized ->


The stored DTCs are displayed and printed out one after the other.
- Check print-out against DTC table and repair all malfunctions as necessary. Diagnostic Trouble Code Descriptions


No DTC recognized! ->


If "No DTC recognized!" is displayed, the program will return to "Select function XX" prompt after the -> button is pressed.

Indicated on display


Rapid data transfer HELP
Select function XX


If something different appears on the display:
See VAG1551 Scan Tool (ST) operating instructions.
- End output (function 06). End Output (Scan Tool Function 06)
- Switch ignition off and disconnect scan tool from Data Link Connector (DLC).