How can you figure out which O2 sensor you need in 2009 Toyota Corolla . I had an emissions test and the code that failed was O2 sensor. how do you figure out which one? I'm replacing it myself.

40

Asked by Aug 18, 2015 at 05:17 PM about the 2009 Toyota Corolla S

Question type: Maintenance & Repair

I had an emission test done on my 2009 Toyota Corolla S and it failed.  The code that
failed was P0037.  They told me they don't know anything and to go to a mechanic.  I
looked it up (my engine light was on, as well) and it came up O2 sensor.  I spoke with
Toyota to get some info and they wanted me to bring it in and charge me an arm and a
leg. They did say that it is usually only one that goes bad at a time.  I'm trying to figure
out how you test for that.  Should I just go to auto zone and see if they can help?  I am
replacing it myself.  Also, inquiring on price..they range from $40-160.. I was hoping if I
only need one not to spend more than $60-80 I want quality but I don't want the most
expensive, especially if I do not really need to spend that amount.

9 Answers

64,995

It's going to be the downstream (after the catalytic converter) sensor. HTH. -Jim

2 out of 2 people think this is helpful.
40

Thank you Jim

2 out of 2 people think this is helpful.
64,995

You're welcome. Glad to help. -Jim

2 out of 2 people think this is helpful.

Jim is spot-on. You can trust his advice. The guys at Auto-Zone will scan it and some of them know what they are doing, others not so much. Just remember (some of them) are trying to sell you something whether you need it or not. MOST are honest, but electronic parts can not be returned, even if never installed. And the dealer you hit the proverbial nail on the head.... and Auto-Zone guys will not test the sensor, only tell you what they read on OBDII scanner. yes, each 02 sensor can be tested, but some of them are heated electrically and often the problem is not the sensor it's self, but rather the wiring to it. In the next window is a link that explains how to test an 02 senso

3 out of 3 people think this is helpful.

https://www.youtube.com/watch?v=7uqmYkl7t0c

1 out of 1 people think this is helpful.

https://www.youtube.com/watch?v=QM2jO0_Cah0

1 out of 1 people think this is helpful.

https://www.youtube.com/watch?v=YL6xkOZxHZ0

2 out of 2 people think this is helpful.

http://www.ehow.com/how_5193043_test-sensor.html

2 out of 2 people think this is helpful.
40

Thank you So much. Tremendous help.

2 out of 2 people think this is helpful.

Your Answer

Add photo

Related Questions

Corolla

Looking for a Used Corolla in your area?

CarGurus has 71,487 nationwide Corolla listings starting at $600.

ZIP:

Search Toyota Corolla Questions

Toyota Corolla Experts

#1 Tom Demyan
Tom Demyan
Reputation 2,350
#2 tenspeed
tenspeed
Reputation 1,800
#3 tennisshoes
tennisshoes
Reputation 1,610
View All

Related Models For Sale

Used Toyota Camry
834 Great Deals out of 89,150 listings starting at $950
Used Honda Civic
492 Great Deals out of 87,973 listings starting at $1,499
Used Honda Accord
717 Great Deals out of 87,014 listings starting at $1,250
Used Toyota RAV4
591 Great Deals out of 69,049 listings starting at $2,350
Used Nissan Altima
846 Great Deals out of 78,726 listings starting at $1,677
Used Nissan Sentra
431 Great Deals out of 56,034 listings starting at $1,499
Used Hyundai Elantra
471 Great Deals out of 51,990 listings starting at $995
Used Toyota Tacoma
500 Great Deals out of 38,896 listings starting at $2,900
Used Toyota Prius
162 Great Deals out of 17,232 listings starting at $1,771
Used Mazda MAZDA3
208 Great Deals out of 30,281 listings starting at $1,495
Used Toyota Yaris
97 Great Deals out of 5,272 listings starting at $1,995
Used Honda CR-V
768 Great Deals out of 58,582 listings starting at $900
Used Ford Focus
540 Great Deals out of 56,100 listings starting at $800
Used Hyundai Sonata
611 Great Deals out of 51,472 listings starting at $1,495

Used Cars For Sale

2016 Toyota Corolla S For Sale
18 Great Deals out of 611 listings starting at $11,900
2015 Toyota Corolla S For Sale
12 Great Deals out of 886 listings starting at $9,995
2014 Toyota Corolla S For Sale
31 Great Deals out of 940 listings starting at $9,000
2013 Toyota Corolla S For Sale
13 Great Deals out of 505 listings starting at $7,880