Contents Wiring diagrams Section: Testing & Diagnostics All sections

Available Functions Audi A8 D3

The requirements for selecting the desired functions can be taken from the following table.

Address words and functions on VAG1551 scan toolIgnition ON, engine not runningEngine idlingVehicle being driven
Address words
00Automatic Test SequenceYesYesYes
01Engine ElectronicsYesYesYes
Functions
01Check Control Module VersionYesYesYes
02Check DTC MemoryYesYesYes
03Output Diagnostic Test Mode (DTM)YesNoNo
04Basic settingYesYesYes
05Erase DTC MemoryYesYesYes
06End OutputYesYesYes
07Code Control ModuleYesNoNo
08Read Measuring Value BlockYesYesYes

AVAILABLE FUNCTIONS - VAG 1551

Mode under Address word 33
Mode 1: Transmit diagnostic dataSwitch ignition ON or let engine run at idle
Mode 2: Transmit operating conditionsSwitch ignition ON or let engine run at idle
Mode 3: Check DTC MemorySwitch ignition ON or let engine run at idle
Mode 4: Erase diagnostic dataSwitch ignition ON or let engine run at idle
Mode 5: Output of oxygen sensor signalsSwitch ignition ON or let engine run at idle
Mode 6: Transmit measured valuesSwitch ignition ON or let engine run at idle
Mode 7: Check DTC MemorySwitch ignition ON or let engine run at idle
Mode 8: Check tank leak testSwitch ignition ON or let engine run at idle
Mode 9: Read out vehicle informationSwitch ignition ON or let engine run at idle

AVAILABLE FUNCTIONS - VAG 1551, ADDRESS WORD 33

Mode 1 to 9 can be selected under address word 33.

  1. Individual measured values can be read out under mode 1. Mode 1 is not recommended for authorized Audi service centers, since the data can be obtained much more accurately under address word 01 function 04 or function 08.
  2. Mode 2 displays operating conditions, for which malfunctions are recognized.
  3. With mode 3 the DTC memory will be checked and with mode 4 the DTC memory will be erased.
  4. Mode 5 displays the static dimensions of the oxygen sensors, which are legally required. Since these dimensions are not directly relevant to oxygen sensor diagnostics, mode 5 is insignificant for the authorized Audi center.
  5. With mode 6 all measured values can be checked from components and systems that are not constantly monitored.
  6. Using mode 7, DTCs can be checked for which the Malfunction Indicator Light (MIL) is not yet lit (MIL is not on, no DTCs under mode 3).
  7. Under mode 8 the tank leak test will be checked.
Address words and functions on VAS 5051 scan toolIgnition ON, engine not runningEngine idlingVehicle being driven
Address words
00Check all fault memoriesYesYesYes
01Engine ElectronicsYesYesYes
Functions
02Check fault memoryYesYesYes
03Final control diagnosisYesNoNo
04Basic settingsYesYesYes
05Erase fault MemoryYesYesYes
06End OutputYesYesYes
07Code Control BlockYesNoNo
08Read Data BlockYesYesYes
09Read single measured valueYesYesYes
10AdaptationYesNoNo
11Log-in procedureYesNoNo
15Readiness codeYesYesYes

AVAILABLE FUNCTIONS - VAS 5051

Mode under Address word 33
Mode 1: Obtain dataSwitch ignition ON or let engine run at idle
Mode 2: Obtain operating conditionsSwitch ignition ON or let engine run at idle
Mode 3: Check fault MemorySwitch ignition ON or let engine run at idle
Mode 4: Reset/delete diagnosis dataSwitch ignition ON or let engine run at idle
Mode 5: Obtain lambda test resultsSwitch ignition ON or let engine run at idle
Mode 6: Test results - non-continuously monitored componentsSwitch ignition ON or let engine run at idle
Mode 7: Test results - continuously monitored componentsSwitch ignition ON or let engine run at idle
Mode 8: Tank leak testSwitch ignition ON or let engine run at idle

AVAILABLE FUNCTIONS - VAS 5051, ADDRESS WORD 33