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Home >> Oldsmobile >> 2000 >> Intrigue GL >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Self-Diagnostics >> Diagnostic Tests >> DTC P0135: Ho2S Heater Circuit - Sensor 1 >> Circuit Description

Circuit Description

HO2S are used to minimize the amount of time required to enter closed loop fuel control operation to allow accurate catalyst monitoring. The HO2S 1 heater is powered directly from ignition 1 circuit and heater ground is controlled by PCM. DTC will set when HO2S 1 current is not within a calibrated range.

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