O2 sensor replacement - Toyota Nation Forum : Toyota Car and Truck Forums
8th Generation (1998-2002) Specific discussion of the 8th generation

 
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#1 Old 03-19-2012, 09:14 PM
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O2 sensor replacement

- have a 2002 TOYOTA COROLLA (NZE121R-AEPDK) LXGENSEDRHD1NZFEATM and i need to replace both O2 sensors. I think the parts numbers are 89465-12620 and 89465-12630. Are there any denso O2 sensors to fit this application? Thnx in advance.
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#2 Old 03-19-2012, 09:28 PM
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Yes, you can buy them for around $60 a piece from RockAuto. The pre-cat o2 sensor is easy to replace from under the hood. The rear one will be a bit of a pain. The sensor connector is underneath the armrest panel between driver and passenger. The sensor is located on the exhaust past catalytic converter. Follow specific instructions from Haynes or FSM.

On second thought: Why do you think you need to replace both sensors? Have you or your mechanic checked their voltages and resistances to make sure they're not working as they're supposed to? What engine trouble codes do you have?

There is no point in throwing parts at the car if you haven't diagnosed the problem properly.

Last edited by crypticlineage; 03-19-2012 at 09:29 PM.
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#3 Old 03-20-2012, 07:29 PM
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cant seem to find those oxygen sensors on that website. the scan says rear oxygen sensor so i want to change both of them. i just need a denso reference number to match the oem part since i cant get the oem.
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#4 Old 03-20-2012, 08:47 PM
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Upstream Sensor: DENSO Part # 2344205
Downstream Sensor: DENSO Part # 2344625

I just picked up these numbers from Rockauto's website. Do a part number search and you should be able to see these. They might not show OEM part number on their website, but these are direct fit OEM sensors, the same ones your car originally came with.

If you want, Amazon sells them for comparable prices too, and if you have prime, you might get free and fast shipping.
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