Test requirements

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Engine at idle
Oxygen sensor control active

When indicated on display

Fig 1: VAG 1551 Scan Tool Display - Diagnosis Of Fuel Supply System (1 Of 2)

Courtesy of AUDI OF AMERICA, INC.

Press buttons -1-, -0- and -7- to select "display group 107" and confirm with -Q- button.

When indicated on display

Fig 2: VAG 1551 Scan Tool Display - Diagnosis Of Fuel Supply System (2 Of 2)

Courtesy of AUDI OF AMERICA, INC.

Check specified values in display field 4.

NOTE:

If display "Test ON" does not appear in the display field. Switch the engine off, restart and repeat WORK STEP 6: DIAGNOSIS OF FUEL SUPPLY SYSTEM . (Diagnostic of fuel supply system)
After the engine has been restarted it might be necessary to select "Address word 01" and initiate the function "04 Basic Setting" again.

DISPLAY GROUP 107: DIAGNOSTIC OF FUEL SUPPLY

	Display fields
	1	2	3	4
Display group 107: Diagnostic of fuel supply
Display	xxx /RPM	x.x %	x.x %	Test ON
Indicated	Engine speed (actual)	Oxygen sensor control average value (Bank 1)	Oxygen sensor control average value (Bank 2)	Diagnostic condition
Work range	min.: 650 RPM max.: 6800 RPM	min.: -25.0 % max.: 25.0 %	min.: -25.0 % max.: 25.0 %	Test OFF Test ON Syst. OK Syst. n OK
Value	650 - 750 RPM	-18.0 % to 12.0 %	-18.0 % to 12.0 %	Syst. OK
Note				If "Syst. n OK" appears, check DTC memory. See DIAGNOSTIC TROUBLE CODE (DTC) MEMORY, CHECKING AND ERASING .

If specified value in display "System OK" is reached:

Press -C- button.