Question about Lexus LS 400

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Locate and replace o2 sensor bank 1 sensor 1 on a 1997 lexus ls 400

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Jason Larocque

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Sensor 1 is the sensor located before the catalytic converter and bank 1 is the side of the engine with cylinder #1 so if i'm correct and you have a V-6 that would be the rear of the engine by firewall and the sensor would be in the exhaust manifold

Posted on Dec 15, 2017


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  • 1 Answer


its in the trunk on my car next to the power ant mount left side.

Posted on Sep 10, 2008



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SOURCE: 1990 Lexus ls 400 transmission

yes, no problem

Posted on Apr 13, 2009


  • 126 Answers

SOURCE: Location of fan blower in 1995 Lexus LS 400

fan blower motor is under dash on passenger side.

Posted on May 21, 2009


  • 70 Answers

SOURCE: obd code P0135 on a lexus ls400

usually your first sensor is located on the exhaust manifold

Posted on Jun 22, 2009

Brian Simpson

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SOURCE: location of o2 sensor bank 1 sensor 2

Bank 1 sensor 2 is the O2 sensor behind the catalytic converter.

Posted on Apr 08, 2011

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1 Answer

Knock sensor location right bank

On the top. Just climb up and try to see it. A hidden device

Aug 11, 2012 | 1990 Lexus LS 400

1 Answer

99 lexus GS-400 P420, where is the O2 sensor? Need Pics not words

Below is a picture of the location of both O2 sensors for your vehicle. Also the last picture is your evap. system. In the "dotted lined" area I would check for rotten or lose hoses in that area as well the vapor pressure sensor could be faulty as well. Hope this helps.


Apr 05, 2012 | 2000 Lexus LS 400

1 Answer

How to replace oxygen sensor?

The sensor is located in the exhaust system just off the exhaust manifold in the head pipe, it is removed using a special 7/8" O2 sensor socket, this socket requires a 1/2" drive ratchet and a short extension in most cases. The sensor unscrews counter clockwise. This engine will have 2 sensors, one for each bank of engine cylinders, you must id the correct sensor before the change out. If money is not a problem i would suggest you replace both sensors as an old and new sensor can provide confusing output data to the powertrain control module(computer).

Jan 15, 2012 | 1998 Lexus LS 400

1 Answer

My Check Engine light came on, code reads bad O2 Sensor heat element Bank One Sensor One, This car have 2 front and 2 back O2 Senors, Is Bank one Sensor one on the Driver side or passenger side ? Thank...

bank 1 is the side cylinder 1 is on.sensor 1 is the first sensor in the exhaust on that bank from the manifold.cylinder 1 is the most forward cylinder on the motor when you look across the motor at the front of it to see which head/vlave cover is farthest forward.

Sep 18, 2011 | 1996 Lexus LS 400

1 Answer

I need to know exactly where the bank one sensor two o2 sensor is on a 1999 lexus ls400

Bank 1 sensor 1 --- on left side of engine in exaust manifold .
Bank 1 sensor 2----- on exaust system near converter
Bank 2 sensor 1----- on right side of engine in exaust manifold
Bank 2 sensor 2 ----- on exaust manifold near converter

Dec 25, 2010 | 2000 Lexus LS 400

1 Answer

Where is the oxygen sensor located in 95 lexus ls 400

there are 2 of them. bank 1 and bank 2. bank 1 is the passenger side and bank 2 is the driver side. they are underneath the car and placed in front of the catalytic converter in the exhaust stream

Oct 04, 2009 | 1995 Lexus LS 400

1 Answer

Lost horsepower on 94 Lexus LS400 after warm up.

O2 sensors WILL NEVER CAUSE A LOSS OF POWER, u are looking in the wrong place, sounds like a fuel starvation problem or a defective MAF, the O2's are just seeing this and setting a code..

Jun 26, 2009 | 1994 Lexus LS 400

1 Answer

Obd code P0135 on a lexus ls400

usually your first sensor is located on the exhaust manifold

Jun 22, 2009 | 2000 Lexus LS 400

4 Answers

How to locate the oxygen sensor in a LEXUS LS430 (Bank1 Sensor1)

the O2 sensor for bank one sensor one is located between the catalytic converter and the engine in the exhaust head pipe. see photo of your engine cylinder layout, the sensor u want to replace is the one at the cylinder #1 0aa2e73.gif bank on right.

Apr 15, 2009 | 2001 Lexus LS 430

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