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O2 sensor Bank 2 Sensor 1 replacement help

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Old 10-17-10, 11:10 AM   #1
airmaui
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Default O2 sensor Bank 2 Sensor 1 replacement help

Hi Guys,

I've searched the forum for hours but can't seem to find the answer to my question. My O2 sensor (bank 2, sensor 1) which I believe is the passenger side sensor before the CAT comes up faulty on the scanner. (CEL, TSC and TSC off light is also lit) I've located the sensor but can't seem to determine where it come thru the floor/firewall into the passenger area. Do I need to remove the passenger side carpeting (and if so how?) or can I go thru the shifter area?

Thanks so much.

Last edited by airmaui; 10-17-10 at 11:24 AM.
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Old 10-17-10, 12:39 PM   #2
azcamber
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bank 2 sensor 1 is on the passenger side exhaust manifold. you can get to it from underneath the car with the covers removed. it is before the catalyst.
i hope this helps

rob
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Old 10-17-10, 01:05 PM   #3
VVTiBob
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Banks 1 & 2 sensor 1 wiring is in the engine compartment. Banks 1 & 2 sensor 2 wiring comes up inside the instrument panel. See the partial diagram "H15" & "H16" below.

The attached PDF shows the sensor you wrote about in the first comment.
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O2 sensor Bank 2 Sensor 1 replacement help-partial-inside-wiring.png   O2 sensor Bank 2 Sensor 1 replacement help-sensor-2-location.jpg  
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File Type: pdf Exhaust layout Engine area.pdf (93.8 KB, 1220 views)

Last edited by VVTiBob; 10-17-10 at 01:18 PM.
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Old 10-17-10, 03:39 PM   #4
airmaui
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You guys are the greatest!
Would you happen to know the universal part numbers for denso or bosch brands for all four o2 sensors?
Thanks again.
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Old 10-17-10, 06:44 PM   #5
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no i dont know the number. i just bought one for my ls430 but i dont remember the part number, it was a denso one that i bought, bank 2 sensor 1. paid about $130 for it.
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Old 12-14-13, 02:50 PM   #6
kenpaulowe
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Anyone have instructions on how to change Bank 2 Sensor 1 on a 2003 lexus LS 430
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2005, 400, 430, bank, bosch, diagram, es330, h16, lexus, ls, o2, oxygen, photo, rx330, sc430, sensor

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