Replacing O2 sensor in 99 Camry

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Old 08 Oct 2005, 08:47 am   #1 (permalink)
Godfrey Muganda
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Default Replacing O2 sensor in 99 Camry

Hi,
Check engine light is on in my 99 Camry, and the car failed emissions
inspection.
I am told that it is an O2 sensor circuit malfunction (Bank 1 sensor 2)

Question: Is this the sensor under the hood, or the one in the exhaust
system under the driver's seat?
Also, any suggestions where I can get the part online for a good price?

Thanks.

Godfrey


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Old 08 Oct 2005, 11:48 am   #2 (permalink)
hbuck
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Default Re: Replacing O2 sensor in 99 Camry

It's under the hood, on the exhaust manifold in the back.
Your car (6cyl) has 3 O2 sensors, 1 on front exhaust manifold(bank 1
sensor 1), 1 on the back exhaust manifold(bank 1 sensor 2), 1 under the
car after cat converter(bank 2 sensor 1).
I don't know where you can get a good deal on one. I bought one a while
back, but being in a hurry I got it at a nearby dealer. It was $138.00
(bank 1 sensor 1 for a 4cyl).





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Old 08 Oct 2005, 08:33 pm   #3 (permalink)
Godfrey Muganda
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Default Re: Replacing O2 sensor in 99 Camry

Thanks,
My car is a 4 cylinder, not a 6 cylinder. Does the information still apply?

Thanks


"hbuck" <hbuck@nadaspam.att.net> wrote in message
news:a55f4e6ca8ef5af47206651047d43b11@localhost.ta lkaboutautos.com...
> It's under the hood, on the exhaust manifold in the back.
> Your car (6cyl) has 3 O2 sensors, 1 on front exhaust manifold(bank 1
> sensor 1), 1 on the back exhaust manifold(bank 1 sensor 2), 1 under the
> car after cat converter(bank 2 sensor 1).
> I don't know where you can get a good deal on one. I bought one a while
> back, but being in a hurry I got it at a nearby dealer. It was $138.00
> (bank 1 sensor 1 for a 4cyl).
>
>
>
>
>



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Old 09 Oct 2005, 06:33 am   #4 (permalink)
hbuck
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Default Re: Replacing O2 sensor in 99 Camry

>by "Godfrey Muganda" <gmuganda@worldnet.att.net> >Oct 8, 2005 at 01:47 PM


>Hi,
>Check engine light is on in my 99 Camry, and the >car failed emissions
>inspection.
>I am told that it is an O2 sensor circuit >malfunction (Bank 1 sensor 2)


>Question: Is this the sensor under the hood, or >the one in the exhaust
>system under the driver's seat?
>Also, any suggestions where I can get the part >online for a good price?


>Thanks.


>Godfrey


>by "hbuck" <hbuck@nadaspam.att.net> Oct 8, 2005 >at 12:48 PM



>It's under the hood, on the exhaust manifold in >the back.
>Your car (6cyl) has 3 O2 sensors, 1 on front >exhaust manifold(bank 1
>sensor 1), 1 on the back exhaust manifold(bank 1 >sensor 2), 1 under the
>car after cat converter(bank 2 sensor 1).
>I don't know where you can get a good deal on >one. I bought one a while
>back, but being in a hurry I got it at a nearby >dealer. It was $138.00
>(bank 1 sensor 1 for a 4cyl).


>by "Godfrey Muganda" <gmuganda@worldnet.att.net> >Oct 9, 2005 at 01:33

AM


>Thanks,
>My car is a 4 cylinder, not a 6 cylinder. Does >the information still
>apply?


>Thanks




No, the position you quoted (bank 1 sensor 2), is only found on a 6 cyl.
4 cyl either has bank 1 sensor 1 (front of car) or bank 2 sensor 1 (under
car after cat converter).


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Old 11 Oct 2005, 01:48 pm   #5 (permalink)
Camrygirl
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Default Re: Replacing O2 sensor in 99 Camry

Hello. I have a 01 Toyota Camry 2.2L 4 cyl. I am not sure if the 99 Camry
motor is the same as the 01.

Be careful in replacing what is said to be an O2 sensor. Some Camry models
have what is called an Air/Fuel Sensor. It looks similar to an O2. I
learned this by THIS WEBSITE! On mine it is located on the front manifold
near the radiator. It was so easy to change even I did it and I am a girl!
HA!

Call the dealer and give them your VIN#. They will be able to tell you
whether you have an O2 Sensor or an Air/Fuel Ratio Sensor.

Sometimes when the CEL light comes on and you get it decoded...lets say at
Auto Zone, it will say that it is an O2 Sensor, which in my case it was
not. I am sure it is just a fancy name that Toyota came up with, but it is
a different part, and the voltage is different. The code I had was P0171
System Lean Bank 1.

I know that MY Camry has 2 Sensors, one in the front on the manifold and
one before the cat. When my CEL Light came on it gave me a code of P0171,
System Lean Bank 1. That is for the Air/Fuel Ratio Sensor. If it was the
2nd O2 it would have said System Lean (Rich) Bank 2.

I am not saying that yours is not an O2 Sensor, but mine is an 01, and I
am not sure what the difference is in the models. But a quick phone call
might save you alot of work and hassle later.

Also, I would definately go with Toyota Parts. Now, I know they can be
expensive, but I just wouldn't put AutoZone parts, well at least not an
Air/Fuel Ratio Sensor on my car. Sure I could have gotten the Universal
one for about $60.00 but I didn't want to deal with having to do all of
that splicing.

Check out the following website....www.mbsautoparts.com. I have no
affiliation with them, but I just bought my Air/Fuel Ratio Sensor from
them. It is a Denso, and if I am not mistaken Denso is the manufacturer
for Toyota. The sensor cost me about $115.00 with shipping (I had it
shipped 2-day). They have really great prices on their parts. The
dealership wanted $200.00 for the SAME sensor!

I HTH. I am by NO means an expert, and the people on this forum are GREAT.
I have found some VERY helpful information on here, and I thought I would
help out a fellow Camry owner.

Good Luck!

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Old 12 Oct 2005, 07:11 pm   #6 (permalink)
johngdole@hotmail.com
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Default Re: Replacing O2 sensor in 99 Camry

Yeah, the inline 4 has one before and one after the catalytic
converter.

I've not tried the Bosch universal oxygen sensor (which requires you to
splice the OEM connector using a special connector they provide). But I
heard it works well and is inexpensive.

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Old 12 Oct 2005, 07:17 pm   #7 (permalink)
johngdole@hotmail.com
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Default Re: Replacing O2 sensor in 99 Camry

Air-Fuel sensor is just another name for an oxygen sensor. It tell you
that the oxygen sensor works a broader range is all. This type of
sensor is usually twice the cost of the narrow band version most of the
states require. Looks like you are in one of the few stricter states
requiring the broad range version of the sensor.

Autozone is actually a very good place to buy Bosch oxygen sensors. And
Bosch is offering a $10 gas card till the end of the year (yes, I am
looking at replacing right now). Autozone sensor prices are quite
competitive.

Bosch is the company that invented the oxygen sensor and other people
just license or try to copy their technology. Go with Bosch oxygen
sensors I'll say. Who knows, Denso may be the source of your problems
in the first place, even if it's oem.

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Old 13 Oct 2005, 01:05 pm   #8 (permalink)
Camrygirl
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Default Re: Replacing O2 sensor in 99 Camry

You know....you may be right about the sensors! =)



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Old 13 Oct 2005, 09:39 pm   #9 (permalink)
qslim
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Default Re: Replacing O2 sensor in 99 Camry

Air fuel ratio sensors are NOT just like oxygen sensors. They operate
differently than oxygen sensors, and the circuit through which information
is delivered to the computer is completely different as well. If an AF
sensor is used as the primary feedback, substituting a plain 02 sensor
will not even come close to working. And AF sensors are more accurate,
too. It's not just a marketing gimmick.

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Old 14 Oct 2005, 09:07 am   #10 (permalink)
Nobody Important
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Default Re: Replacing O2 sensor in 99 Camry

qslim wrote:
> If an AF
> sensor is used as the primary feedback, substituting a plain 02 sensor
> will not even come close to working.


You know, I've read this before, but it's not clear to me why this is
so. Referring to:

http://www.lindertech.com/docs/j_tho...raf_sensor.pdf

you see on page 20 the transfer function for a plain O2 sensor and on
page 25 that of the fancy toyota sensor. These functions look the same
to me, which implies that you could substitute a plain O2 sensor.
What's wrong with this argument? (I'm not disputing you; I ask merely
for information.)

is all.
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