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Home >> Toyota >> 1995 >> Tercel Base, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - System/Component Tests >> Engine Sensors & Switches >> Sub-Oxygen Sensor

Sub-Oxygen Sensor

NOTE: Sub-oxygen sensor may be used only on varied applications on some models. See the OXYGEN SENSOR APPLICATION  table.

Sub-oxygen sensor is mounted on exhaust pipe behind catalytic converter. Sub-oxygen sensor may be referred to as an oxygen sensor. If sub-oxygen sensor or circuit fails, a diagnostic trouble Code PO141 will set in Engine Control Module (ECM) memory. For diagnosis of sub-oxygen sensor and circuit, see Code PO141 in the TROUBLE CODE CHART in the TESTS W/CODES article.

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