A4 Sedan V6-2.8L (AFC) (1996)
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Effects of Signal Failure:
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The system responds to failure to receive a signal from the oxygen sensor by cancelling the oxygen sensor control and suppressing the lambda
adaptation function.
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The evaporative emissions control system reverts to emergency backup operation. The engine-management ECM operates according to a
stored emergency program.
OXYGEN SENSOR G130/G131:
Connector View - Oxygen Sensor G130/G131
Electrical Circuit - Oxygen Sensor G130/G131
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Oxygen sensor G13O is the Post-Catalyst probe of Bank 1, G131 is that of Bank 2.
Effects of Signal Failure:
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Closed oxygen sensor control is maintained in the event of failure in the post-converter oxygen sensor. However, failure in the post-converter
sensor makes it impossible to monitor operation of the catalytic converter. Catalyst function can not be checked if sensor malfunctions.
BENEFITS OF HEATED OXYGEN SENSORS:
