Diagnostic Trouble Code (DTC) Memory, checking and erasing: Notes

WARNING: This page does not describe the selected car, but rather 13 other vehicles, including the 2005 Audi allroad, 2004 Audi allroad, 2004 Audi A6, 2003 Audi allroad, and 2003 Audi A6. However, it is still accessible from the selected car via links, so may be relevant.

Connect vehicle diagnostic, testing and information system VAS5051 or VAG1551 scan tool and select "Engine Electronics" by entering address word 01. See VEHICLE DIAGNOSTIC, TESTING AND INFORMATION SYSTEM VAS5051 OR VAG1551 SCAN TOOL, CONNECTING AND SELECTING FUNCTIONS . Engine must be idling.

Only if engine does not start:

Check engine with ignition switched on.
Switch on printer with PRINT button (indicator light in button lights up).

Indicated on display

Fig 1: VAG 1551 Scan Tool Display - Diagnostic Trouble Code (DTC) Memory (1 Of 8)

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Operate scan tool according to information on display.
Press buttons -0- and -2- to select function "Check DTC Memory" and confirm entry with -Q- button.

Indicated on display

Fig 2: VAG 1551 Scan Tool Display - Diagnostic Trouble Code (DTC) Memory (2 Of 8)

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Press right arrow button.

Indicated on display

Fig 3: VAG 1551 Scan Tool Display - Diagnostic Trouble Code (DTC) Memory (3 Of 8)

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The stored malfunctions will be displayed and printed out in sequence.

Locate and eliminate printed out malfunctions according to DTC table. See DIAGNOSTIC TROUBLE CODE (DTC) TABLE .
NOTE:
- If no malfunction is stored in the DTC memory, do not erase memory, otherwise readiness code is reset.
- If the DTC memory was erased, generate new readiness code. See READINESS CODE, GENERATING .
Press right arrow button.

Indicated on display:

Fig 4: VAG 1551 Scan Tool Display - Diagnostic Trouble Code (DTC) Memory (4 Of 8)

Courtesy of AUDI OF AMERICA, INC.

Press buttons -0- and -5- to select function "DTC Memory" and confirm entry with -Q- button.

NOTE: Indicated on display:

Fig 5: VAG 1551 Scan Tool Display - Diagnostic Trouble Code (DTC) Memory (5 Of 8)

Courtesy of AUDI OF AMERICA, INC.

Test sequence has not been followed .

Check DTC memory.

Under the following conditions the DTC memory will NOT be erased:

If ignition was switched off after DTC memory has been checked.
A static malfunction has not been eliminated.

Indicated on display

Fig 6: VAG 1551 Scan Tool Display - Diagnostic Trouble Code (DTC) Memory (6 Of 8)

Courtesy of AUDI OF AMERICA, INC.

Press right arrow button.
After repairs, check DTC memory again.

NOTE: During testing and repair work, malfunctions can be recognized from other control modules (e.g. disconnected harness connectors). Therefore, on completion, the DTC memories of all control modules must be checked and erased.