O2 Sensor problem

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Sep 27, 2012

BrickM

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O2 Sensor problem

My code reader stats a po139 error. "Oxygen Sensor Circut slow Response Bank 1 Sensor 2". I want change it out but don't know where this particular sensor is located (Bank1, Sensor 2?). Any help anyone could provide would be great thanks. Brick

Sep 27, 2012

GolNat

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Re: O2 Sensor problem

Sensor 2 refers to the sensor after the cat. Make sure you use a Denzo or NGK, not a Bosch!

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