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Home >> Dodge and Ram >> 2006 >> Durango 5.7 2, 4WD >> Repair and Diagnosis >> Engine Performance >> System >> DTCS P0121 To P0171 >> Diagnosis And Testing >> P0155-O2 Sensor 2/1 Heater Performance >> Monitor Conditions

Monitor Conditions

  1. When Monitored: 

    Engine running and heater duty cycle greater than 0%. Battery voltage greater than 11.0 volts.

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