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#1
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My check engine light came on today and my code reader said the code was PO141 which is a O2 sensor heater circuit malfunction (Bank 1 Sensor 2). Which side is bank one and is sensor two the sensor before or after the converter. Also should I replace all of the sensor or just the bad one.
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#2
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Re: O2 sensor
I believe it's after the converter. Not 100% sure, but sounds right....Mike
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#3
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Re: O2 sensor
Bank 1 is passenger (curb) side, #2 is the second one back, the one AFTER the front converter.
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#4
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Re: O2 sensor
I would replace both of them if you have dual exhaust at that point. On my chebbie, my computer would only throw a code if the sensor wiring was disconnected, but that is a chevy. All the fords i own are either old enough that they don;t have sensors or they are diesel, boy nothing beats the PSD.
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