Passat Syncro Wagon V6-2.8L (ATQ) (2000)
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Fuse no.34 must be OK.
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Exhaust system must be properly sealed between catalytic converter and cylinder head.
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Coolant temperature must be at least 85°C, See display group 04, display field 3
Function test
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Connect V.A.G 1551 scan tool (VAG 1552). Start engine and select Engine Control Module (ECM) using address word 01. Refer to Scan Tool
Testing/Scan Tool Connecting and Initial Checks/Connecting V.A.G 1551 Scan Tool See: Powertrain Management/Computers and Control
Systems/Testing and Inspection/Reading and Clearing Diagnostic Trouble Codes/Scan Tool Connecting/With Manufacturer's Scan
Tool/Connecting VAG 1551 Scan Tool
Indicated on display
Rapid data transfer
HELP
Select function XX
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Press buttons -0- and -8- to select "Read measuring value block" function 08. Press -Q- button to confirm input.
Indicated on display
Read Measuring Value Block
Input display group number XXX
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Press 0, 3 and 0 for the function "display group number 30", and then press Q to exit from input mode.
Indicated on display (1 - 4 = display fields)
Read Measuring Value Block 30
->
1
2
3
4
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Check status of oxygen sensor control after catalytic converter (display fields 2 and 4).
Specification: 1 1 1
NOTE: The bits in display fields 2 and 4 are set to 1 only after the catalytic converter temperature has risen to over 250°C (See display groups 34 and
35, display field 2).
Meaning of 3-place number block in display fields 2 and 4: