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Home › Jeep › 2012 › Wrangler Rubicon, Automatic Trans › Repair and Diagnosis › Engine Performance › System › 3.6L - DTCS P0157 To P0455 › Diagnosis And Testing › P0161-O2 Sensor 2/2 Heater Performance › When Monitored:

When Monitored:

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

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