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Home >> Lexus >> 1997 >> SC 400 >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Tests W/Codes >> Circuit Tests >> DTC P0136, P0156 - Oxygen Sensor Related >> Condition
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DTC P0136, P0156 - Oxygen Sensor Related: Condition

DTC is set when heated oxygen sensor voltage remains at .4 volt or more, or .6 volt or less during vehicle operation (31 MPH or more), once engine is at normal operating temperature. Possible cause is:

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