Operation 7: Diagnosis of oxygen sensor condition behind catalytic converter.

WARNING: This page is about a different car, the 2003 Audi S6 and 2002 Audi S6. However, it is still accessible from the selected car via links, so may be relevant.

Engine idling

Indicated on display

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

Courtesy of AUDI OF AMERICA, INC.

Enter "036" for "display group number 036" and confirm entry with Q key.

Display readout:

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

Courtesy of AUDI OF AMERICA, INC.

Check specified values in display zones 2 and 4.

DISPLAY GROUP 036: CONDITION OF OXYGEN SENSOR BEHIND CATALYTIC CONVERTER (BANKS 1 AND 2)

	Display zones
	1	2	3	4
Display group 036: Condition of oxygen sensor behind catalytic converter (banks 1 and 2)
Display	x.xxx V	Test ON	x.xxx V	Test ON
Display	Voltage of oxygen sensor behind catalytic converter, bank 1	Diagnosis status	Voltage of oxygen sensor behind catalytic converter, bank 2	Diagnosis status
Range	0.000V...1.000 volts	Test OFF Test ON B1-P2 OK B1-P2 NOK	0.000V...1.000V	Test OFF Test ON B2-P2 OK B2-P2 NOK
Specified value	than 0.4 volts or greater than 0.5 volts	B1-P2 OK	lower than 0.4 volts or greater than 0.5 volts	B2-P2 OK
Note:		If "B1-P2 not OK" is displayed check DTC memory . See DIAGNOSTIC TROUBLE CODE (DTC) MEMORY, CHECKING AND ERASING .		If "B2-P2 not OK" is displayed check DTC memory . See DIAGNOSTIC TROUBLE CODE (DTC) MEMORY, CHECKING AND ERASING .

If the specified value in

Display zone 2 "B1-P2 OK" and in

Display zone 4 "B2-P2 OK" is achieved:

Press C key.