Operation 5: Checking operating status of oxygen sensor control

NOTE: If necessary, after the engine starts reselect vehicle system "01 - Engine electronics" and diagnostic function "04 - Basic setting".

Test conditions:

Display on VAS 5051:

Fig 1: Displaying On VAS 5051 - Operation 5, Checking Operating Status Of Oxygen Sensor Control (1 Of 2)

Courtesy of AUDI OF AMERICA, INC.

1 - Enter display group

Enter "030" for "display group number 030" in zone -2- and confirm entry by pressing -Q- button.

Display on VAS 5051:

Fig 2: Displaying On VAS 5051 - Operation 5, Checking Operating Status Of Oxygen Sensor Control (2 Of 2)

Courtesy of AUDI OF AMERICA, INC.

NOTE:

By increasing the engine speed (RPM) the specified values are achieved quicker.
The "Oxygen sensor status" indicates the condition of the oxygen sensor control and the oxygen sensor (O2S).

DISPLAY GROUP 030: OXYGEN SENSOR STATUS

	Display zones
	1	2	3	4
Display group 030: Oxygen sensor status
Display	X X X	X X X
Display	Oxygen sensor status, bank 1, sensor 1	Oxygen sensor status, bank 2, sensor 1
Range	0 = off 1 = on	0 = off 1 = on
Specified value	1 1 1	1 1 0

SIGNIFICANCE OF 3-DIGIT READOUT OF DISPLAY GROUP 030

Significance of 3-digit readout of display group 030
X	X	X	Display zones 1 and 2:
		X	Oxygen sensor control 0 = not active; 1 = active
	X		Oxygen sensor condition: 0 = not active; 1 = active
X			Condition of oxygen sensor heating: 0 = not active; 1 = active

NOTE:

The first digit of the 3-digit display (heating) fluctuates between 0 and 1 at certain operating points.
The oxygen sensor control of oxygen sensor (O2S) after Three Way Catalytic Converter (TWC) (bank 1, sensor 2) is not active without engine load, i.e. the display of the 3-digit display is 0.

Only continue with test if displays have reached "111" in display zone 1 and "110" in display zone 2 at least once.
Press < button.
Perform next operation.