2001 Audi A6 Avant QuattroFACTORY OEM SERVICE PROCEDURE

Check DTC Memory (function 02) and Erase DTC Memory (function 05): Notes

Engine must run at idle for this.

NOTE: If engine doesn't start, crank engine using starter for at least 5 seconds. Do not switch ignition off afterward under any circumstance.

When indicated on display:

Fig 1: Identifying VAG1551 Scan Tool Display - Check DTC Memory And Erase DTC Memory (1 Of 8)
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  • Press buttons -0- and -2- to select "Check DTC memory" and press - Q- button to confirm input.

When indicated on display:

Fig 2: Identifying VAG1551 Scan Tool Display - Check DTC Memory And Erase DTC Memory (2 Of 8)
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  • Press right arrow button.

or 

When indicated on display:

Fig 3: Identifying VAG1551 Scan Tool Display - Check DTC Memory And Erase DTC Memory (3 Of 8)
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When printer is switched on, stored DTCs are shown in sequence and printed.

NOTE:
  • If there are no DTCs in DTC memory, DTC memory should not be unnecessarily erased or else readiness code will be lost.
  • If DTC memory was erased, readiness code must be re - generated. See READINESS CODE, GENERATING .
  • Press --> button.

When indicated on display:

Fig 4: Identifying VAG1551 Scan Tool Display - Check DTC Memory And Erase DTC Memory (4 Of 8)
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  • Press buttons -0- and -5- to select "Erase DTC memory" and press - Q- button to confirm input.
NOTE: When indicated on display:
Factory Service Tools

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.

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