Fault Criteria, Oxygen Sensor 2
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Fault Criteria, Oxygen Sensor 2
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The oxygen sensor's activity is diagnosed once per trip.
When the conditions for diagnosis are fulfilled, the sensor's change in voltage
and voltage level are measured. If sensor voltage does not change by a sufficient amount and
does not exceed a certain level within a certain time, the sensor is defective.
If sensor voltage does not change by more than 0.5 V and does not exceed 0.4 V in 500
seconds, the fault criteria are satisfied.
In other respects the sensor and its heating element are monitored according to the On-
Board Diagnostic I model for the front heated oxygen sensor.
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Diagnosis not yet performed this
trip
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Vehicle speed above 0 km/h
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Coolant temperature above 70°C (158°F)
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Sensor heating activated
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1.
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Direction:
-sensor voltage
-time
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2.
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Sensor voltage > 0.4 V and sensor voltage change > 0.5 V within 500
sec
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3.
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Function monitored this trip
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4.
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Fault criteria for oxygen sensor 2 activity-diagnose
fulfilled
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