Readiness code, reading

WARNING: This page is about a different car, the 2006 Audi A4, 2005 Audi A4, 2004 Audi A4, 2003 Audi A4, and 2002 Audi A4. However, it is still accessible from the selected car via links, so may be relevant.

Work sequence

Connect vehicle diagnostic, testing and information system VAS 5051. Refer to VAS 5051 vehicle diagnostic, testing and information system, connecting and selecting functions and select vehicle system "01 -Engine electronics" in selection.

Engine must be run at idle.

Fig 1: Diagnostic System VAS 5051: Display

Courtesy of VOLKSWAGEN UNITED STATES, INC.

Display on VAS 5051:

Under -1- select diagnostic function "08 - Read measured value block".

Fig 2: Diagnostic System VAS 5051: Display

Courtesy of VOLKSWAGEN UNITED STATES, INC.

Display on VAS 5051:

1 - Enter display group

Enter "086" for "display group number 086" in zone -2- and confirm entry by pressing -Q- button.

Fig 3: Diagnostic System VAS 5051: Display

Courtesy of VOLKSWAGEN UNITED STATES, INC.

Display on VAS 5051:

Check indication in display field -1-.
Check readiness code in display zone -1-.

Specified value: 0 0 0 0 0 0 0 0

	Display zones
	1	2	3	4
Display group 086: Readiness code
Display	0 0 0 0 0 0 0 0	X X X X X X X X	X X X X X X X X
Display	Ready bits Completed tests	Individual tests performed	Individual tests performed
Range	1 = not completed 0 = completed	1 = not completed 0 = completed	1 = not completed 0 = completed
Specified value	0 0 0 0 0 0 0 0	X X X X X X X X	X X X X X X X X
	Explanation of readiness code. Refer to Readiness code, reading

Note on display zone 1:

Display zone 1 is the most important. This display indicates which system has been checked by the self-diagnosis since the last time the Diagnostic Trouble Code (DTC) memory was erased or since installation of a new control module. After erasing the Diagnostic Trouble Code (DTC) memory, all testable values are set to "1" and then to "0" after successful completion of the test.

X	X	X	X	X	X	X	X	Notes on display group 086, display zone 1
								Three Way Catalytic Converter (TWC) diagnosis Display 0 = Test was carried out Display 1 = Test was not carried out (generate readiness code. Refer to Readiness code, generating )
								Display always 0
								Evaporative Emission (EVAP) system Display 0 = Test was carried out Display 1 = Test was not carried out (generate readiness code. Refer to Readiness code, generating )
								Secondary Air Injection (AIR) system Display 0 = Test was carried out Display 1 = Test was not carried out (generate readiness code. Refer to Readiness code, generating )
								Display always 0
								Oxygen Sensors (O2S) Display 0 = Test was carried out Display 1 = Test was not carried out (generate readiness code. Refer to Readiness code, generating )
								Oxygen Sensor (O2S) heater Display 0 = Test was carried out Display 1 = Test was not carried out (generate readiness code. Refer to Readiness code, generating )
								Display always 0

NOTE: The readiness code is only produced when all display digits in display zone 1 are set to "0".

If the specification "0 0 0 0 0 0 0 0" is achieved in display zone 1:

Press ← button.
Check Diagnostic Trouble Code (DTC) memory to check. Refer to Diagnostic Trouble Code (DTC) memory, checking (there must not be any stored DTCs).

If specified value is not obtained:

Generate readiness code. Refer to Readiness code, generating