Diagnostic Trouble Code (DTC) Memory, Checking & Erasing (Function 02 & 05)

Diagnostic Trouble Code (DTC) Memory, Checking & Erasing (Function 02 & 05)

Special tools, and equipment
- Scan Tool (ST) V.A.G 1551 (or VAG 1552) with cable VAG 1551/3

Work sequence


NOTE: All functions which could previously be performed with VAG 1551/1552 can also be performed with Scan Tool VAS 5051.


- Connect Scan Tool (ST) V.A.G 1551 (VAG 1552) and with "Address word" 01 select ECM (with engine idling), Scan Tool, connecting.) Scan Tool Testing and Procedures

Only when engine does not start:
- Turn on ignition.
- Switch on Scan Tool printer with print button. Indicator lamp in button must illuminate.

Indicated on display:


Rapid data transfer HELP
Select function XX


- Operate Scan Tool (ST) and follow information on display:
- Press buttons -0- and -2- for function "Check DTC memory" and confirm entry with -Q- button.

Number of DTC stored or "No DTC recognized!" will be as shown.


X DTCs recognized!


If no DTC is stored:
- Press -> button.

If one or more DTC are stored:

Stored DTCs will be displayed and printed out one after another.

After stored DTCs have been printed out, display will appear as shown


Rapid data transfer HELP
Select function XX


- Press buttons -0- and -5- for function "Erase DTC memory" and confirm entry with -Q- button.

Indicated on display:


Rapid data transfer ->
DTC memory is erased!


NOTE: If ignition is turned off between "Check DTC memory" and "Erase DTC memory" DTC memory will not be erased.


- Set readiness code, if DTC memory was erased.
- Press -> button.

Indicated on display:


Rapid data transfer HELP
Select function XX


- Press buttons -0- and -6- for "End output" and confirm with -Q- button.
- Correct DTCs on print-out using DTC table: VAG codes, SAE P codes Air Bag Systems