porsche Workshop Repair Guides

Porsche Workshop Service and Repair Manuals

Oxygen Sensor|Testing and Inspection > < Diagnosis of Oxygen Sensing System Mixture Adaptation|Page 2745
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Oxygen Sensor: Description and Operation
Oxygen Sensor Monitoring

Oxygen Sensor Monitoring

The oxygen sensors are monitored for:

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Operational readiness

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Connectivity

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Short circuit to B+

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Short circuit to ground

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Open circuit

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Aging of oxygen sensors via the control frequency and control position

Monitoring of Sensor Aging

Contamination or aging of the oxygen sensor affects the sensor voltage or period duration of the sensor signal and therefore has a negative influence on
emission values.

Oxygen Sensor|Testing and Inspection > < Diagnosis of Oxygen Sensing System Mixture Adaptation|Page 2745