O2 Sensors - Bank 1 and Bank 2
07-05-2011, 11:36 AM
#1
Yard Mechanic
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O2 Sensors - Bank 1 and Bank 2
I have a 2004 5.4L with 123000 miles.
I occasionally connect my reader to the computer to see how it is doing and if it is popping any codes. The last time, I noticed that the B1S2 and B2S2 oxygen sensors were not changing their readings and the O2 light on the main screen of my reader was blinking.
I know that this means that I need to replace those O2 sensors, but I can't find anything that tells me which is sensors these are. Google searches come up with very widely different answers.
So which is Bank 1 and Bank 2?
And
Which is Sensor 1 and Sensor 2 on those banks?
Any help would be great.
Thanks,
Gary
I occasionally connect my reader to the computer to see how it is doing and if it is popping any codes. The last time, I noticed that the B1S2 and B2S2 oxygen sensors were not changing their readings and the O2 light on the main screen of my reader was blinking.
I know that this means that I need to replace those O2 sensors, but I can't find anything that tells me which is sensors these are. Google searches come up with very widely different answers.
So which is Bank 1 and Bank 2?
And
Which is Sensor 1 and Sensor 2 on those banks?
Any help would be great.
Thanks,
Gary
07-05-2011, 11:40 AM
#2
Mark
iTrader: (1)
Just replace all 4 and be done with it...if 2 are bad the other 2 are not far behind.
07-05-2011, 11:43 AM
#3
Yard Mechanic
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While I do plan to replace all 4, I still want to know the answer to this because it might be very useful to know. Say 3 months after replacing all 4 and 1 of them fails. Thanks though.
07-05-2011, 11:50 AM
#4
Mark
iTrader: (1)
I don't have my book with me at work...sorry I'm just guessing but I think Bank 1 is drivers side and sensor 1 is up stream.
