Mike H.

Hey guys,

So my mom's car is popping up with a 04-13 error code which is an upstream oxygen sensor circuit slow reponse fault (left bank). How do I fix this? Replace the O2 sensor? What is the difference between the left bank and right bank? Also, which sensor is it, before the cat or after the cat? There is a price difference between the two according to Autozone. Thanks in advance.

Regards,
Mike

sagamax

iTrader: (5)

yea i was gettin 0409 a few weeks ago which is the same thing but the right bank so i talked 2 my mechanic and he said that ur sensors are gettin worn out and it is takin a while 2 c it ur runnin lean or rich so he said u have 2 replace them. try ordering them from www.oxygensensors.com its cheaper than buyin it from napa and even nissan.

Mike H.

Thanks. But which one should I be replacing? The one before or after the cat? Or both? Also, I'm still lost on the left and right bank thing as there are only 2 O2 sensors.

Also, what is the torque spec for the O2 sensors?

sagamax

iTrader: (5)

sorry im not sure wat right and left bank means but i know that all of the sensors are the same so i just bought the one and i took it 2 my mechanics and he replaced it for me.

and btw i have no clue wat the torque spec for the o2 sensor is