Question about 2003 Toyota Highlander

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Need to replace the Oxygen sensor at location bank 2 sensor 1 where is the location of this sensor.

The engine is the V6 model.

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  • Contributor
  • 5 Answers

Find #1 cylinder that side is bank 1, bank 2 is opposite. sensor 1 is closest to manifold.

Posted on Jan 10, 2013

  • Scott Clement Jan 10, 2013

    Thanks for the info it is appreciated

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Posted on Jan 02, 2017

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crapiemael
  • 241 Answers

SOURCE: p0051 code, where is the sensor located, where is

Bank 2 is passenger side, sensor 1 is the one up closest to the exhaust manifold. Plug in type (just remove old and plug back into the wiring harness connector) is about $90 at Autozone. You can get a cheaper one that you splice but it's confusing to understand which wires to splice together. Don't forget to buy the special socket, $10, to remove and install the sensor. It's split up the side for the wires. Forget trying to use an open end wrench, socket is best.

Posted on Nov 18, 2009

wracefans24
  • 1985 Answers

SOURCE: problem locating the oxygen sensor for my 2000 Toyota Estima

drivers side ,sensor before converter

Posted on Jan 03, 2010

  • 60 Answers

SOURCE: how to replace the bank

A bank two sensor means it is on the side of the engine that does not contain the number 1 cylinder. Was there a sensor number to go along with that? Usually that code pops up as "Bank X, Sensor X" to tell you which side and sensor it is. From what I have read, Avalons have 3 O2 sensors. 2 Pre-Cat and 1 Post.

Once you figure that out, replacing one is as simple as getting an open end wrench, unscrewing and disconnecting the old O2 sensor, and reverse the procedure to install the new one.

Posted on Jul 27, 2008

DLBurkhart
  • 210 Answers

SOURCE: need to replace bank 2 sensor 2 on 2003 toyota

Bank 2, sensor 2 is a heated O2 sensor located below (after) the catalytic converter on the passenger-side. When this sensor gets clogged and/or goes bad from rust and heat fatigue, the voltage drops low enough to cause the electronic control module to register error code P0161, which then causes the check engine light to come on.

To replace Bank 2, sensor 2, remove the debri shield from just behind the front bumper, underneath the vehicle. There will be 10 bolts holding it on (10mm, I believe). After removing it, look toward the center of the newly exposed area and you will see 2 finger-like objects projecting out from the engine with wires coming out of each. The one on the left (passenger-side) is bank 2, sensor 2. The one on the right (driver-side) is bank 1, sensor 2.

I got my direct-fit sensor online for $55 from Remart Auto Parts. I know it is tempting to get the universal-fit type and save the cash. But after doing that once, I wouldn't care to do it again.

I found a YouTube video showing pictures of where the two lower (after catalytic converter) sensors are located. While the video only points out the driver-side sensor (bank 1, sensor 2), it's easy to spot the other one being only inches away.

http://www.youtube.com/watch?v=TgQtZci2oOg

If anyone has found this helpful at all, please vote for me.

Posted on Jan 08, 2010

  • 462 Answers

SOURCE: Where is the oxygen sensor, bank 1 sensor 1,

B1S1 means first (upstream) , closest sensor to cyl. head , usualy at exhaust manifold.Bank 1 is cyl. head with cyl.#1 if you have V6 engine.
Best choice for brand - Denso.

Posted on Apr 28, 2010

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Which Oxygen Sensor Is It?


There are many inquiries online about which oxygen sensor to change. Oxygen sensor failure codes are very common on a lot of vehicles. With all of today's vehicles having at least two oxygen sensors and many having three or four of them, it can be a little confusing as to which one is causing the problem.

Before we get into which sensor is which, we need to have a little discussion about oxygen sensor fault codes. There are several different types of oxygen sensor fault codes. Here are just some of the most common ones:

P0135 "Oxygen Sensor Heater Circuit Bank1 Sensor 1"
P0141 "Oxygen Sensor Heater Circuit Bank 1 Sensor 2"
P0147 "Oxygen Sensor Circuit Bank 1 Sensor 3"
P0152 "Oxygen Sensor Voltage High Bank 2 Sensor 1"
P0159 "Oxygen Sensor Slow Response Bank 2 Sensor 2"
P0171 "Oxygen Sensor Lean Sensor 1 Bank 1"
P0172 "Oxygen Sensor Lean Sensor 1 Bank 2"
P0174 "Oxygen Sensor Rich Sensor 1 Bank 1"
P0175 "Oxygen Sensor Rich Sensor 1 Bank 2"

There are many more possible oxygen sensor codes, but I only listed these to make my point. Many times the oxygen sensor code is NOT caused by the oxygen sensor itself. "Lean" or "Rich" oxygen sensor codes (i.e. P0171, P0174) are usually caused by something other than the oxygen sensor. Something is wrong, causing the engine to run lean (not enough fuel or too much air) or causing the engine to run rich (too much fuel or not enough air). In these cases, replacing the oxygen sensor will not fix a thing. (That is, unless you are trying to fix your bank account from having too high of a balance!) The new oxygen sensor will just set the same code as the original one. This is because the oxygen sensor is not CAUSING the problem, it is only REPORTING the problem.

High voltage codes (like P0152 above) can be caused by the oxygen sensor wires being shorted to another wire inside the wiring harness. Sometimes these codes are caused by bad grounds where some other component is trying to ground through the oxygen sensor circuit. Again, replacing the oxygen sensor will not fix this! In short, the problem needs to be diagnosed before running out and buying an oxygen sensor.

Just because a fault code has "Oxygen Sensor" or "O2 Sensor" or "O2S" in its description does not necessarily mean that an oxygen sensor needs to be replaced. Many do-it-yourselfers believe that all there is to fixing the car is to hook it to the "magic box", collect the fault codes and replace the parts the computer tells you to replace. There is nothing further from the truth.

Fault codes only point you toward which SYSTEM is failing. The system must be diagnosed to find the CAUSE of the failure. If this is not done properly, it will only result in wasting a bunch of your money. This is what you were trying to avoid by doing it yourself!

So, after reading all of the above, if you think you still want to replace an oxygen sensor, but don't know which one; here is how to figure it out:

Oxygen sensors are always numbered like this:

Bank 1 Sensor 1
Bank 2 Sensor 1
Bank 1 Sensor 2
Bank 2 Sensor 2

Some manufacturers use a kind of shorthand that reads different, but means the same thing:

Sensor 1/1 or O2s 1/1
Sensor 2/1 or O2s 2/1
Sensor 1/2 or O2s 1/2
Sensor 2/2 or O2s 2/2

Bank 1 is always the side of the engine where cylinder #1 is located and, of course, Bank 2 is the opposite side.
On a 4 cylinder engine, there is only one bank and it is always referred to as Bank 1. The exception to the 4 cylinder rule is on certain 4 cylinder engines (specifically, some Toyotas) there are two catalytic converters used. In this case, Bank 1 sensors will still be in the pipe for the catalyst that is connected to cylinder #1 and Bank 2 sensors will be in the other one.

Sensor 1 is always the "upstream" sensor (the one located BEFORE the catalytic converter).
Sensor 2 is always the "downstream" sensor (the one that is located AFTER the catalytic converter).
Sensor 3 refers to the ONLY "downstream" sensor where there are two sensors before the catalyst and only one after the catalyst. On very few vehicles the reference to this reads "Bank 1 Sensor 3".

If you do not know where cylinder #1 is, then you need to get a diagram of the firing order for your engine. Just post a question on FixYa.com and make sure you give the YEAR, MAKE, MODEL, and ENGINE SIZE of your vehicle and one or more of our experts will be happy to tell you how to find cylinder #1.

- DTTECH
ASE Certified Master Automobile Technician


Also check out this article by dttech: What Else Could Be Wrong?

on Apr 29, 2011 | Ford F-150 Cars & Trucks

1 Answer

Where is the 02 Oxygen Sensor before the cadalic converter on a 2006 Hyundai Santa Fe


Usually these are located on the exhaust manifold or just below the exhaust manifold and you should be able to see it in the engine bay. On V6 engines there will be one sensor on each of the 2 exhaust banks.
You will probably need to remove the engine cover to see the sensors on your exhaust.

If someone told you to replace these because you got a particular fault code I would be wary. A decent scan tool and basic diagnostics can show if the 02 sensor is working or not. Some faults often blamed on an 02 sensor are not due to faulty sensors.

Jan 09, 2016 | 2006 Hyundai Santa Fe

1 Answer

P0141 civic code


in barstool talk:
the rear oxy is toast. get a new one.
if v6 engine, then post that, and we an tell which it is. but is bank1 no matter, bank one means side of engine that has #1 cylinder

- Faulty Heated Oxygen Sensor (H2OS) Bank 1 Sensor 2
- Heated Oxygen Sensor (H2OS) Bank 1 Sensor 2 circuit fuse
- Heated Oxygen Sensor (H2OS) Bank 1 Sensor 2 circuit open shorted to ground
- Heated Oxygen Sensor (H2OS) Bank 1 Sensor 2 circuit poor electrical connection
- Faulty Engine Control Module (ECM) (NEVER)

Jan 11, 2014 | 2001 Honda Civic

1 Answer

Where oxygen sensor bank 1 sensor 1 is located for a Acura TL 2006?


where, as ON Car?
you forgot to post engine option, so nobody can anwer easy
but Sensor 1 is the sensor ,closest to cylinder 1.
Bank 1 is the bank closes to cylinder 1.
on I4 engines Cyl #1 is closest to the cam, and crank pulleys.
on V6 /V8 Cylinder 1 is that bank that is most forward.
on V egines, on bank sits forward, one rear.
if you told engine , size and displacement, this be snap.
or look it up on alldata.com
or google your real engine type.
guessing, USA>....???

3.2 L J32A3 (258 hp) V6
3.5 L J35A8 (286 hp) V6 (Type-S only)

J32
first google hit
shows (ASCII art, kwel)
No it is

1-2-3
4-5-6

Front of car

so on this V6 , bank 1 is rear, right. see? it above?
and B1S 1 is rear bank, sensor top. sensor closest to engine head.
sensor 2 is always behind CAT, in fact its the CAT monitor sensor.

at a 100k mile replace both V6, top sensors. for max MPG.
they dont last 300k like engines,.
the rear is leave for smog man kicks in behind, only. p420x...

Sep 15, 2013 | Acura Cars & Trucks

1 Answer

What is the best way to remove O2 sensor bank 1 sensor 2?


Here is the low-down on oxygen sensors, and their location designations explained:

Oxygen sensors are screwed into the exhaust system at various points. Some people say that there are 4 oxygen sensors, but technically, that is not correct. Only the front 2 are considered oxygen sensors.

These oxygen sensors are screwed into the exhaust pipe or directly into the exhaust manifold, one on each bank. Because they are in front of the catalytic converter, this is often referred to as 'upstream'.

The other 2 are actually called catalyst monitors. They are oxygen sensors, but they serve a different purpose. They monitor the activities of the catalytic converters, thus the name, catalyst monitors. They are screwed into the exhaust one on each bank, after, or downstream, of the catalytic converters.

On a 4 cyl engine, there are only a total of two such sensors, the one in front of the catalytic converter is the O2 sensor, the one behind the cat is the catalyst monitor.

The location names for them are as follows:
  • On a 4 cyl, the front / upstream is called "bank 1 sensor 1" and the rear / downstream sensor is called "bank 1, sensor 2."

  • On a V6 or V8 engine:

    • the passenger side bank on a forward facing engine, or the bank closest to the firewall on a transverse mounted engine, is bank number 1, so the forward / upstream sensor on that bank would be "bank 1, sensor 1."

    • The driver's side bank (forward facing mount engine), or front bank (transverse engine) would be bank number 2, thus the forward / upstream sensor on that bank would be "bank 2, sensor 1," and the rearmost / downstream sensor on that bank would be "bank 2, sensor 2."

Jul 28, 2012 | 2004 Mitsubishi Endeavor

1 Answer

2004 Mitsubishi Endeavor 3.8l v6 my service in light is on giving trouble code P0141 Oxygen Sensor Bank 1 Sensor 2 but i dont understand the location of this sensor i replaced what i thought was bank 1...


Oxygen sensors monitor the combustion by products produced by your engine and send this information to your emission control system.
The location of sensors can vary from one model to the next.
Suggested is to obtain shop manual for your model to use as a reference.

The V6 engine (any V6) was invented to give the appearance of a V8 but reduce costs.
Unfortunately it's impossible to balance the firing order of three cylinder engine banks so you will have a difficult time getting any V6 to idle smooth.
There is nothing wrong with the engine you simply have to live with the lumpy idle or buy a V8 car.

Sep 21, 2017 | Cars & Trucks

2 Answers

2004 saturn vue v6 sensor 1 bank 1 where is that


zjlimited_569.jpg

Fig. Heated Oxygen (HO2S) location (bank 1, sensors 1 & 2) - 3.5L engine


zjlimited_570.jpg

Fig. Heated Oxygen (HO2S) location (bank 2, sensors 1 & 2) - 3.5L engine


Hope helps.

Jan 28, 2011 | Saturn Vue Cars & Trucks

2 Answers

Where is the bank 1 sensor 1 o2 sensor located in a 2006 hyundai sontata gls v6?


The bank has to do with which side of the engine. The 'Sensor 1' indicates that it is upstream of the catalytic converter.

Heated Oxygen Sensor Removal & Installation Heated Oxygen Sensor (Front) (2.4L) hyundai-04-24-5822.gif

Heated Oxygen Sensor (Rear) (2.4L) hyundai-04-24-5823.gif

Heated Oxygen Sensor (Bank 1/Sensor 1) (3.3L) kia-04-00-5213.gif

Heated Oxygen Sensor (Bank 1/Sensor 2) (3.3L) kia-04-00-5214.gif

Heated Oxygen Sensor (Bank 2/Sensor 1) (3.3L) kia-04-00-5215.gif

Heated Oxygen Sensor (Bank 2/Sensor 2) (3.3L) hyundai-04-33-5855.gif

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Jan 13, 2011 | 2006 Hyundai Sonata

1 Answer

Need to know location oxygen sensor 2003 tiburon bank 1 sensor 2 to replace it


WHICH ENGINE?.. 2.0 four cylinder? OR 2.7 V6?
Anyway, sensor 2 is always 'downstream', so it's lower than all the others. V6? lowest near the firewall.. .4 cylinder?.. lowest near the radiator.

Sep 29, 2009 | 2003 Hyundai Tiburon

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