Work step: 16

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Diagnostic test: Heated Oxygen Sensor (HO2S) before three way catalytic converter

Display will appear as shown

Fig 1: VAG 1551/1552 Scan Tool Display: Readiness Code, Creating, Work Step 16 (1 Of 2)

Press -1-, -1- and -5- buttons to input display group 115.
Press -Q- button to confirm input.

Display will appear as shown (1 to 4 = display fields)

Fig 2: VAG 1551/1552 Scan Tool Display: Readiness Code, Creating, Work Step 16 (2 Of 2)

Increase engine speed between 2200 and 2800 RPM and check specifications.

DISPLAY GROUP 115, FUNCTION: 04

	Display fields
	1	2	3	4
Display group: 115 Function: 04
Display	xxx.x °C	xxx.x °C	x.xx V	xxxx xxxx
Indicated	Engine coolant temperature	Three way catalytic converter (TWC) temperature	HO2S (S1) voltage, O2S switching	Diagnostic conditions
Specific.	At least 60 °C	Approx. 360 °C -	Fluctuating -	1011 x100 x = Not relevant
Working range	-46.5 to 141.0 °C	0.0 to 999.9 °C	0 to 1.0 V

RELEVANCE OF 8 DIGIT NUMBER BLOCK IN DISPLAY FIELD 4

Relevance of 8 digit number block in display field 4
1	2	3	4	5	6	7	8	Specifications of diagnostic conditions
1								HO2S before TWC is switched on
	0							HO2S is operationally warm
		1						HO2S before TWC is operationally ready
			1					Oxygen sensor control before TWC is active
					1			CYCLE Bit = Diagnosis completed
						0		Diagnosis malfunction free
							0	DTC memory malfunction free

Press -3- button (VAG 1551) or up arrow on VAG 1552.