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LS - 1st and 2nd Gen (1990-2000) Discussion topics related to the 1990 - 2000 Lexus LS400

O2 Sensor Quick Question

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Old Nov 6, 2014 | 06:44 AM
  #1  
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Default O2 Sensor Quick Question

I bought this for my 2000 LS400 which has the P0156 code.
But is this the right one?


Denso 234-4169 Oxygen Sensor
Automotive
Sold by Amazon.com.ca, Inc.

Denso 234-4169 Oxygen Sensor: Amazon.ca: Automotive Denso 234-4169 Oxygen Sensor: Amazon.ca: Automotive
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Old Nov 6, 2014 | 09:25 AM
  #2  
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call the dealer and get the part number and cross them..
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Old Nov 6, 2014 | 05:43 PM
  #3  
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no! what you listed is the upstream sensor (sensor 1). you need the downstream sensor (sensor 2).

P0156 = sensor 2, bank 2 is located on the passenger side after the cat.

you need:
Denso 234-4137

source: rockauto.com
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Old Nov 6, 2014 | 07:06 PM
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OMG I just ordered the wrong one (upstream).
So it already shipped so I ordered the downstream one too.

At least I can replace both the up and down at the same time...maybe I should hang on to the upstream one until one of them fails first...
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