Oxygen sensor.......

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The service engine light came on today, went by AutoZone and the scan code is P0161, oxygen sensor. Can anyone tell where to look first?

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[BadBowtie 98]

The service engine light came on today, went by AutoZone and the scan code is P0161, oxygen sensor. Can anyone tell where to look first?

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Does it tell you which bank? NVM Oxygen O2 Sensor Circuit Low Voltage (Bank 2, Sensor 2)

Which i believe is rear passenger

 

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Bank 2

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[BadBowtie 98]

Bank 2

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Its the 02 sensor on the passenger side past the cat

 

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Its the 02 sensor on the passenger side past the cat

Is that hard to replace?

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[Dubya]

Is that hard to replace?

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i would spray some pb blaster or liquid wrench cause they can be a pain to remove. you will also need a 02 sensor socket if you don't have one auto zone o'reillys etc do rent em out

 

[BadBowtie 98]

i would spray some pb blaster or liquid wrench cause they can be a pain to remove. you will also need a 02 sensor socket if you don't have one auto zone o'reillys etc do rent em out

They have those? I just usually go at it with a torch and crescent