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Retrieving Codes

NOTE: See ENTERING SELF-DIAGNOSTICS  for additional scan tester operating instructions.
  1. Connect Scan Tester (VAG 1551) to Data Link Connectors (DLC) located below A/C-heater control panel. Attach Black connector first, wait for VAG ON-BOARD DIAGNOSTIC display, then connect White connector. See Fig 1 . DO NOT  connect scan tester Blue connector.
  2. Turn ignition on. Operate scan tester and observe display. Press "1" button to select RAPID DATA TRANSFER function. Press PRINT button to turn on printer. Indicator light on button should come on.
  3. Press "0" and "1" buttons to select ENGINE ELECTRONICS function. Press "Q" button to enter input. Press right arrow button, then "0" and "2" buttons to select READ DTC MEMORY function. Press "Q" button to enter input.
  4. Scan tester will display malfunction numbers (if any). If NO FAULTS (DTCs) RECOGNIZED is displayed, press right arrow button to return to RAPID DATA TRANSFER function.
  5. If one or more DTCs are stored, look up DTCs and repair as necessary. After repairs, press "0" and "5" buttons to select ERASE DTC MEMORY function. Press "Q" button to enter input. After DTCs are erased, press right arrow button.
    Fig 1: Retrieving Fault Codes (Typical)
    G93C80467Courtesy of VOLKSWAGEN UNITED STATES, INC.
  6. Press "0" and "6" buttons to select END DATA TRANSFER function. Press "Q" button to enter input. Enter RAPID DATA TRANSFER function and test drive vehicle for at least 10 minutes.
  7. During test drive, ensure that engine coolant temperature reaches 185°F (85°C). Ensure that accelerator pedal is momentarily, but completely pushed down (wide open throttle) at least once.
  8. Ensure engine speed reaches at least 4600 RPM. Accelerate vehicle for 4 seconds with accelerator pedal pushed halfway down (transmission in 4th gear). Select READ DTC MEMORY function once again to ensure DTCs (malfunctions) have been cleared (corrected).