Replacing O2 Sensor - Toyota Nation Forum : Toyota Car and Truck Forums

toyota_b · 10-17-2010, 05:05 PM

Hi guys replacing the O2 sensor in my car after getting a diagnostic pulled on it from good ole auto zone.

I bought the O2 sensor 4-wire and no i am trying to track down the old O2 sensor however i am having a bit of trouble.

I searched the forums but i could only find topics and locations on camry model toyotas.

My car is a 2003 Toyota Corolla.

Any help provided would be great.

Thanks,

B

TrdSpeed140 · 10-17-2010, 08:26 PM

what was the code? you're trying to find the actual physical location of the O2 sensor? there are actually two O2 sensors, one is right on the header and the other is on the exhaust pipe just after the first bend and before the 2nd catalytic converter.

mikered30 · 10-17-2010, 08:47 PM

Is that a universal sensor? If it is bosch, return it and get a denso sensor, you will thank me later.

TrdSpeed140 · 10-17-2010, 09:37 PM

^^^ probably is, I don't think Autozone carries Denso parts.

mikered30 · 10-17-2010, 10:38 PM

If it is universal, you probably don't want to be cutting and splicing. Get a Denso or NGK direct fit sensor. See this thread on removal: 03 Corolla Replace Oxygen Sensor

toyota_b · 10-19-2010, 01:29 PM

I bought it from ebay its a universal 4 wire that i soldered to my old plug wires. Cost was 20, i looked at o reily's auto parts and the told me 125 for a denso direct plug in really do not have that kinda of cash for a little part.

The brand model from ebay said it was Standard Motor Products.

I replaced the O2 sensor by the firewall much like the other post stated, however i did not realize these have 2 oxygen sensors, so i might have to replace the other as well.

Where is the second O2 sensor located i know the other post stated its on the headers of the car, but i did not see it the other day?

Do i need to take the plastics off the header in order to get to it?

Thanks,

B

NutsNBolts · 10-19-2010, 02:10 PM

The universal sensors will only cause you more problems,best to use OE ''original'' sensors

toyota_b · 10-19-2010, 05:00 PM

I'll get denso sensors when i can till then i am just trying to get rid of the code so the check engine light goes turns off and get sensors replaced.

Anyone have any info on how i can locate or what i need to take off to get to the other sensor?