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Home >> Dodge and Ram >> 2001 >> Durango 5.9 Z, 4WD, Part Time >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Self-Diagnostics >> Diagnostic Tests >> DTC P0136: 1/2 O2 Sensor Heater Circuit Malfunction >> Description

DTC P0136: 1/2 O2 Sensor Heater Circuit Malfunction: Description

The 1/2 Heated Oxygen Sensor (HO2S) may be referred to as a downstream oxygen sensor. The 1/2 HO2S is located in exhaust pipe behind left catalytic converter. The 1/2 HO2S heater circuit is monitored when ignition is on and battery voltage is more than 10.4 volts. DTC may be stored in Powertrain Control Module (PCM) if PCM relay control circuit between PCM and oxygen sensor relay does not match desired stated. Possible causes are:

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