Jetta V6-2.8L (AFP) (1999)
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Press -> button.
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Press buttons -0- and -6- to select "End Output" function 06 and press -Q- button to confirm input.
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Switch ignition off.
Continuation
If the oxygen sensor control in display field 1 does not fluctuate as stated:
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Press -> button.
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Press buttons -0- and -6- to select "End Output" function 06 and press -Q- button to confirm input.
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Carry out road test to remove possible residue on oxygen sensor and repeat check.
Observe the safety precautions when carrying out a road test. Refer to "Fuel Delivery and Air Induction", See: Fuel Delivery and Air
Induction/Service Precautions
If the specified values in display field 1 are not obtained even after a road test or the value does not fluctuate by at least 2 %:
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Check oxygen sensor (before Three Way Catalytic Converter (TWC)) aging.
Evaluating display field 32, display field 1: Oxygen sensor learned values before Three Way Catalytic Converter (TWC)