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Joined: Dec 2004
Posts: 40
Beau
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Beau

Member
2000 Toyota Celica

Joined: Dec 2004
Posts: 40
Southern California
Jan 10, 4:52pm - #370711 
Replacing Oxygen Sensor

my 00 celica has a faulty O2 sensor that needs to be replaced. my dad and i were thinking about doing it ourselves. My dad has replaced the oxygen sensors on a ford expedition before. my question is, does anyone know how much harder it will be to replace the O2 sensor on my car vs. the expedition. should we even attempt it, or just bring it to a mechanic (who quoted me $300 for the repeair)?

Joined: Dec 2004
Posts: 150
xTc_celica
Member
xTc_celica

Member
2000 Toyota Celica

Joined: Dec 2004
Posts: 150
norton, ks
Jan 10, 4:54pm - #370712 
are you sure its your o2 sensor or could it be your maf sensor?


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Joined: Dec 2004
Posts: 40
Beau
Member
Beau

Member
2000 Toyota Celica

Joined: Dec 2004
Posts: 40
Southern California
Jan 10, 5:07pm - #370713 
no, its 02. the dealerhsip already ran the diagnostics

Joined: Feb 2004
Posts: 424
SeeULater
Senior Member
SeeULater
2000 White Toyota Celica
Senior Member
2000 Toyota Celica

Joined: Feb 2004
Posts: 424
Jan 10, 5:21pm - #370714 
It is fairly easy if you get a direct replacement.

Joined: Jan 2004
Posts: 1,612
eric_h
2low2slow
eric_h

2low2slow
2002 Toyota Celica GT

Joined: Jan 2004
Posts: 1,612
St.George, UT
Jan 10, 6:29pm - #370715 
wow thats alot, i got 2 02 sensors and a maf replaced free under warrenty, makes me happy, id say if you got the part do it yourself and save the money


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A boats a boat, but the mystery box could be anything....Even a boat!
Joined: Sep 2003
Posts: 2,242
Lucky_317
Specialist
Lucky_317

Specialist
2000 Toyota Celica

Joined: Sep 2003
Posts: 2,242
Fontana, CA
Jan 10, 9:40pm - #370716 
it's easy. do it yourself.


Best 60' 1.959 best 1/4 - 13.7 @ 101mph
Joined: Sep 2002
Posts: 91
defjukie
Member
defjukie

Member

Joined: Sep 2002
Posts: 91
strong island
Jan 11, 7:56am - #370717 
well autozone told me it was the o2 sensor so I just ordered an o2 sensor from the dealer. However, this weekend, I cleaned my MAF sensor and the damn CEL has not come on since... thumbsup (I know, i should have done this first)

So, I've got a precat-o2 sensor for sale if you need it. Unopened. The receipt from the dealer says they don't take returns on "special orders". BS. But they give credit. I don't care, whatever. I got it for $150 total. If interested, PM me.

Joined: Nov 2002
Posts: 1,073
grcelica
Specialist
grcelica

Specialist
2001 Toyota Celica GT

Joined: Nov 2002
Posts: 1,073
NW, PA
Jan 11, 8:20pm - #370718 
you got ripped. My dealer charged $125 for the sensor INSTALLED.

Joined: Sep 2002
Posts: 91
defjukie
Member
defjukie

Member

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Posts: 91
strong island
Jan 12, 11:42am - #370719 
Originally Posted by grcelica

you got ripped. My dealer charged $125 for the sensor INSTALLED.


things happen. in all actuality, that was the cheapest dealer around here...others quoted me at $175 $160...so congrats to you!

Just called and they're letting me return it for my money back. nice.

Joined: Nov 2003
Posts: 453
Jtultra
Senior Member
Jtultra

Senior Member
2000 Toyota Celica

Joined: Nov 2003
Posts: 453
Marietta, GA
Jan 12, 6:44pm - #370720 
make sure its your O2 though, my 00 GTS was throwing the faulty O2 codes, but it turned out to be a faulty ECU


The 2ZZ god
Joined: Dec 2004
Posts: 40
Beau
Member
Beau

Member
2000 Toyota Celica

Joined: Dec 2004
Posts: 40
Southern California
Jan 12, 11:03pm - #370721 
how did you find out that it was the ecu? because my 00 GTS came up as P0141. O2 sensor, bank one, sensor 2 faulty. Maybe my ecu is bad. but thats pretty expensive isnt it?

Joined: Jul 2004
Posts: 161
XPunkJoeX
Member
XPunkJoeX

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2000 Toyota Celica

Joined: Jul 2004
Posts: 161
Baldwin Park, CA
Jan 16, 1:50am - #370722 
Yes the ECU is expensive if you buy it from the dealer 700-800 dollars. I had to replace mine along with all my injectors since their is a TSB for 2000 Celica GTS for ECU and injectors. You can find the parts way cheaper at www.car-part.com The codes I had were P0171 and P0300. After replacing my ECU and injectors I no longer get the code P0300 but I do get P0171(Running Lean). I think its my sensors as well. Dealer wont give me an answer since I have a CAI and Air/Fuel Gauge.


If Life Starts To Pass You By...Downshift!!!
Joined: Dec 2004
Posts: 40
Beau
Member
Beau

Member
2000 Toyota Celica

Joined: Dec 2004
Posts: 40
Southern California
Jan 26, 5:32pm - #370723 
i got the reapir done and the CEL hasnt come back on, so it was definatly the O2 sensor. it was an easy repair once i found where the end connected in.

Joined: Mar 2014
Posts: 1
msy
New Member
msy
New Member

Joined: Mar 2014
Posts: 1
CA
Mar 13, 5:32pm - #449899 
hi

I need help. i have toyota celica 2000. I need to change bank 1 sensor 1 ( O2 sensor) but is it upstream or down stream one? Dose any one know?

Joined: Nov 2013
Posts: 8
SteveCan
New Member
SteveCan

New Member
2004 Toyota Celica GTS Tsunami

Joined: Nov 2013
Posts: 8
Canada
Apr 19, 3:35pm - #449945 
Upstream is forward of the CAT - Catalytic Converter (closet to the Exhaust Manifold) and downstream is after the CAT, closes to the CATBACK Exhaust. Note: the O2 Sensors are different, so ensure you pickup the upstream one. They have different part #'s. Note 2 - From my personal experience only, so other's may have experienced different - Ensure you pick up a OEM one and not after market. I replaced mine with after market and it lasted a few months.


1970 Celica GT - 275,000 miles - retired
1980 Celica GT - 350,000 miles - retired
2003 Celica GT - 171,000 km's - Being Sold
2004 Celica GTS Tsunami - 151,000 km's - driving
Joined: Jul 2014
Posts: 4
tenten
New Member
tenten
2001 Red Toyota Celica GT
New Member
2001 Toyota Celica GT

Joined: Jul 2014
Posts: 4
Winnipeg Manitoba Canada
Oct 15, 6:12pm - #450282 
Any DIY video or instructions to change Oxygen sensor upstream and downstream?

Joined: May 2002
Posts: 464
CaffeineKid
CelicaSpecialist
CaffeineKid

CelicaSpecialist
2008 Scion tC

Joined: May 2002
Posts: 464
California
Oct 15, 6:15pm - #450283 

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