Passat Sedan L4-1781cc 1.8L Turbo (AEB) (1999)
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Check Oxygen sensor control (before Three Way Catalyst) Display zones 1 and 2 on chart.
Continuation
If specification in Display zone 1 not obtained, or value does not fluctuate at least 2 %:
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Perform a test drive to remove possible residue on Oxygen sensor and repeat check.
If the the specification in Display zone 1 is not obtained even after a road test, or the value does not fluctuate at least 2 %:
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Check Oxygen sensor heating.
If value shown in Display zone 1 remains constant:
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Observe Oxygen sensor Voltage, Display zone 2
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Press -> button.
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Press 0 and 6 buttons to select Function 06: "End data transfer"
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Press Q button to enter input
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Switch OFF ignition.
Evaluating Display group 32