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Home >> Mazda >> 2002 >> Millenia S >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Self-Diagnostics - 2.3L >> Diagnostic Tests >> DTC P0134: Front Right Ho2S Circuit, No Activity Detected & P0154: Front Left Ho2S Circuit, No Activity Detected >> Detection Condition
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Detection Condition

PCM monitors input voltage from front HO2S when the following monitoring conditions are met. See MONITORING CONDITIONS  . If input voltage from sensor never exceeds 0.55 volts for 99 seconds, PCM determines sensor circuit is not activated.

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