Wrong O2 sensor???
Thread Starter
Rookie
Joined: Mar 2016
Posts: 26
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From: OR
Wrong O2 sensor???
2003 RX300. Got the trouble code for the Heated O2 Sensor (Bank 1 Sensor 2). Lexuspartsnow.com says I need part number
89465-49075
http://www.lexuspartsnow.com/parts/l...465-49075.html
I believe them so I bought the same exact part from Amazon even though their site says it doesn't fit, thinking the Lexus site will know better.
Got it installed fine and cleared the codes but the code keeps coming up every time I clear it. Did I just waste $140? Why would one site list it as fitting and the other doesn't? Could it potentially be another issue?
89465-49075
http://www.lexuspartsnow.com/parts/l...465-49075.html
I believe them so I bought the same exact part from Amazon even though their site says it doesn't fit, thinking the Lexus site will know better.
Got it installed fine and cleared the codes but the code keeps coming up every time I clear it. Did I just waste $140? Why would one site list it as fitting and the other doesn't? Could it potentially be another issue?
Racer
Joined: Nov 2009
Posts: 1,567
Likes: 87
From: NJ
some codes that come up could be false positives especially if there are multiple codes displayed. However, there might be a problem with your B1 catalytic converter. Are you experiencing oil consumption? If so, runners off the rear manifold flow to the B1 catalyitic and unburnt oil might be clogging it.
I would first try a long sustained drive to get the catalytic converters nice and hot and see if the code clears itself.
I would first try a long sustained drive to get the catalytic converters nice and hot and see if the code clears itself.
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Thread Starter
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Joined: Mar 2016
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From: OR
This diagram shows it has bank 1 sensor 2
I got it from this thread https://www.clublexus.com/forums/rx-...el-sensor.html
And this is where I found the part number for it http://www.lexuspartsnow.com/parts-l...rs=89465-49075
I got it from this thread https://www.clublexus.com/forums/rx-...el-sensor.html
And this is where I found the part number for it http://www.lexuspartsnow.com/parts-l...rs=89465-49075
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Racer
Joined: Nov 2009
Posts: 1,567
Likes: 87
From: NJ
let me get back to you, i will verify my manual for location. in either case it should be pointed to an O2 sensor pre-cat.
Edit: OBD2 report codes are standard. p0155 is universally bank2 sensor 1. Top of your front manifold.
Edit: OBD2 report codes are standard. p0155 is universally bank2 sensor 1. Top of your front manifold.
Last edited by fastnoypi; Mar 7, 2016 at 02:32 PM.
Lexus Champion
Joined: Nov 2005
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From: OH
Lexus Champion
Joined: Nov 2005
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From: OH
Rookie
Joined: Nov 2015
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From: Rousse
I got 2 of these.
Both error codes were gone after replacement.
Both error codes were gone after replacement.
Racer
Joined: Nov 2009
Posts: 1,567
Likes: 87
From: NJ
I got 2 of these.
Both error codes were gone after replacement.
Amazon.com: Denso 234-9009 Oxygen Sensor: Automotive
Both error codes were gone after replacement.
Amazon.com: Denso 234-9009 Oxygen Sensor: Automotive
pre-cat o2 sensors for b1s1 and b2s1