Diagnostic Software for VW-Audi Group Cars

881 Sumneytown Pike, Lansdale PA 19446, USA

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- Fault Code Screen  

 Corresponds to VAG 1551/1552 functions 02 & 05

On this screen, VAG-COM shows you any DTC's (“Diagnostic Trouble Codes” or Fault Codes). VAG-COM shows the DTC numbers and also decodes each DTC into meaningful text. 

At top of the screen, you have the VAG Number and Component number as shown on the Open Controller screen.

VAG-COM tells you how many fault codes have been found and displays each of them. The 5-digit or 7-digit number is a standardized VAG fault code, which can be searched in the Factory Repair Manuals. The text is a description of the part and failure mode. The letter and number combination in parentheses is  the DIN Component Identifier. This is followed by elaborators describing the condition of the fault. The second line contains the P-code, or generic OBD-II code (if it exists, there are thousands of VAG codes without generic OBD-II equivalents).

The Display Freeze Frame Data checkbox adds Freeze Frame data for Fault Codes on control modules using the KWP-2000 protocols. Note:  Not all control modules fully support this; very few cars can currently handle freeze-frame data using the VAG proprietary protocols.  In vehicles that do not support Freeze Frame, that checkbox will not be present.

One component of Freeze Frame data is the Fault Priority number as described below:

Number Meaning
1 The fault has a strong influence on drivability, immediate stop is required.
2 The fault requires an immediate service appointment.
3 The fault doesn't require an immediate service appointment, but it should be corrected with the next service appointment.
4 The fault recommends an action to be taken, otherwise drivability might be affected.
5 The fault has no influence on drivability.
6  The fault has a long term influence on drivability.
7 The fault has an influence on the comfort functions, but doesn't influence the cars drivability.
8 General Note

Fault Frequency shows how many times, during all driving cycles, that the fault that caused the code has recurred. So, if you have a fault with a Frequency of 11,  then conditions sufficient to trigger the fault have happened 11 times since the fault was stored.

The Reset counter is a number that has been pre-assigned to each fault, with the number of problem-free driving cycles before the fault presumably clears itself. Each time a driving cycle occurs, and the conditions sufficient to trigger the fault do NOT occur, then the reset counter should go down by one. So if you have a fault with a Reset Counter of 40, if the controller goes through a problem-free driving cycle then that number should go down to 39.

[Print Codes] will print a Fault Code Report. If your PC is not connected to a printer when this button is pressed, be sure to use Windows to set the printer to "Work Off-Line" first! Later, when you connect the PC to a printer, un-check "Work Off-Line" to print the report.

[Copy Codes] will copy your fault codes to Windows Clipboard. Once you have pressed the Copy Codes button, you may paste the results into the application of your choice, such as MS Word or Notepad.

[Save Codes] will save a plain-text  Fault Code Report to your PC, typically in this directory:
C:\Program Files\VAG-COM\Logs

[Clear Codes - 05] will erase the DTC's from the Control Module's memory.   Be aware, this does not fix the problem that caused the fault! DTC's should only be erased after correcting the condition(s) that caused them in the first place. Note:  There is no way to erase individual DTC's while leaving others alone.  This is not a limitation in VAG-COM it's just the way the VAG protocols work.

[Done, Go Back] takes you back to the Controller Information Screen where you can select other functions.

Shareware Limitation(s): 

  • The Unregistered/Unactivated version of VAG-COM will only decode a fraction of the DTC's it finds into text. However, it will always show all DTC numbers.

  • Freeze Frame is not available.

                Online Demo / Manual
- Fault Code Screen