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HOMESERVICE MANUALSAUDI2001A6 AVANT QUATTROREPAIR AND DIAGNOSISHEATING, VENTILATION & A/C (HVAC)HVAC CONTROL SYSTEMSON BOARD DIAGNOSTIC (OBD) - HVACCHECK DTC MEMORY (FUNCTION 02)
2001 Audi A6 Avant Quattro

Check DTC Memory (function 02)

2001 Audi A6 Avant QuattroSECTION Check DTC Memory (function 02)
  • Connect VAG 1551 Scan Tool (ST),
  • Press buttons -0- and -8- to insert AC/Heating Electronics" address word 08 and advance program until "Select function XX" appears on display.
  • Switch printer on via the PRINT button (indicator lamp in button lights up).

    Indicated on display (function selection):

    Fig 1: V.A.G 1551 Scan Tool Display - Checking DTC Memory (1 Of 5)
    G02718768Courtesy of AUDI OF AMERICA, INC.
  • Press buttons -0- and -2- to select "Check DTC Memory", function 02.

    Indicated on display:

    Fig 2: V.A.G 1551 Scan Tool Display - Checking DTC Memory (2 Of 5)
    G02718769Courtesy of AUDI OF AMERICA, INC.
  • Press -Q- button to confirm input.

    Number of stored DTCs or "No DTC recognized" will be indicated on display.

    Fig 3: V.A.G 1551 Scan Tool Display - Checking DTC Memory (3 Of 5)
    G02718770Courtesy of AUDI OF AMERICA, INC.
RENDER: 1.0x

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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.