Test requirements

WARNING: This page does not describe the selected car, but rather 13 other vehicles, including the 2005 Audi allroad, 2004 Audi allroad, 2004 Audi A6, 2003 Audi allroad, and 2003 Audi A6. However, it is still accessible from the selected car via links, so may be relevant.

Engine running at 1900 - 2200 RPM

Indicated on display

Fig 1: VAG 1551 Scan Tool Display - Diagnosis Of Catalytic Converter (1 Of 2)

Courtesy of AUDI OF AMERICA, INC.

Press buttons -0-, -4- and -6- to select "display group 046" and confirm input with -Q- button.

Indicated on display

Fig 2: VAG 1551 Scan Tool Display - Diagnosis Of Catalytic Converter (2 Of 2)

Courtesy of AUDI OF AMERICA, INC.

Check specified value in display field 4.

NOTE: The test duration for catalytic converter diagnosis takes approximately 60 seconds.

DISPLAY GROUP 046: DIAGNOSTIC OF CATALYTIC CONVERTER (BANK 1)

	Display fields
	1	2	3	4
Display group 046: Diagnostic of catalytic converter (Bank 1)
Display	xxxx/RPM	xxx °C	x.x s	-
Indicated	Engine speed(RPM)	Catalyst temperature	Catalytic converter conversion	Diagnostic condition
Work range	0 - 6800 RPM	70 - 850 °C	0.0 - 0.99	Test OFF Test ON Cat B1 OK Cat B1 not OK
Specified value	1900 - 2200 RPM	greater than 350 °C	0.0 - 0.80	Cat B1 OK
Note				If "Cat B1 not OK" is displayed: Check DTC memory. See DIAGNOSTIC TROUBLE CODE (DTC) MEMORY, CHECKING AND ERASING . If no malfunction is stored replace catalytic converter.

If the specified value "Cat B1 OK" is reached:

Press -C- button
- Engine running at 1900 - 2200 RPM
Press buttons -0-, -4- and -7- to select "display group 047" and confirm input with -Q- button.

DISPLAY GROUP 047: DIAGNOSTIC OF CATALYTIC CONVERTER (BANK 2)

	Display fields
	1	2	3	4
Display group 047: Diagnostic of catalytic converter (Bank 2)
Display	xxxx/RPM	xxx °C	x.x seconds	-
Indicated	Engine speed (RPM)	Catalyst temperature	Catalytic converter conversion	Diagnostic condition
Work range	0 - 6800 RPM	70 - 850 °C	0.0 - 0.99	Test OFF Test ON Cat B2 OK Cat B2 not OK
Specified value	1900 - 2200 RPM	greater than 350 °C	0.0 - 0.80	Cat B2 OK
Note				If "Cat B2 not OK" is displayed: Check DTC memory. See DIAGNOSTIC TROUBLE CODE (DTC) MEMORY, CHECKING AND ERASING . If no malfunction is stored replace catalytic converter.

If the specified value "Cat B2 OK" is reached:

Press -C- button