VAG 1551/1552 functions 02 and 05
Posted by Anne at August 15th, 2012
On this screen, VCDS shows you any DTCs ("Diagnostic Trouble Codes" or Fault Codes ) present in the control module in which a communications session is currently active. VCDS shows the DTC numbers and also decodes each DTC into meaningful text
At the top of the screen is shown the VAG Number and Component number as found on the Open Controller screen.
VCDS tells you how many fault codes have been found and displays each of them. The 5,6, or 7-digit number is s 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 such as "004" meaning "No Signal/Communication". The second line contains the P-code , or generic OBD一II code (if it exists, there are thousands of VAG codes without generic OBD一II equivalents).
The Display Freeze Frame Data checkbox adds Freeze Frame data for Fault Codes on control modules using the KWP-2000 /CAN /
UDS protocols. Note: Not all control modules fully support this. As a rule of thumb , cars which were re-designed after 2003 will likely
have some control modules that support it, and older designs will not. There's no harm in leaving this enabled in any case. However,
un-checking it can make the results less cluttered in a scan which contains many fault codes . In vehicles that do not support Freeze
Frame, that checkbox will not be present.
Fault Frequency shows how many times the conditions that caused the fault have recurred, during all driving cycles. 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 counter can have values from 0 to 254. It is incremented with each occurrence of the fault (during all driving cycles).
The Reset counter is a number that has been pre-assigned to each fault, with the number of problem-free driving cycles before the
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
[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 the Logs directory of your PC typically: C:\ross-tech\vcds\Logs\
[Clear Codes一05] will erase the DTCs from the Control Module's memory. Be aware, this does not fix the problem that caused
the fault! DTCs should only be erased after correcting the conditions) that caused them in the first place.
Note: There is no way to erase
individual DTCs while leaving others alone. This is not a limitation in VCDS. 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.