rogerscivic

Hey guys yellow check engine light came on this week got it scaned and got a po133 shop told me its a air fuel ratio primary oxygen sensor slow response before the cataylitic converter i paid there diagnoses and will be changing it out myself since its a easy swap out.? my question is should i use the honda one or the alternative being aftermarket ?

Colin42

Use the OEM one either Denso or ntk. You should be able to see one of those names stamped on the sensor, might have to take a wire brush to it if it's rusty. Then go to either Denso or ntk's website and dine the correct part number for your car.
I had to change the one on my 05 and I found the correct Denso sensor on Amazon for $160, Honda wanted over $300 for the same sensor.

brags

I would get the Denso since it closely resembles the old one thats on the Car already

I'm pretty sure its what Honda uses, if You buy one off them cant say that about NTK though. lol


https://www.densoproducts.com/product.aspx?zpid=27170

rogerscivic

Denso Ahy..? i been calling around and noo one seems to have neither ntk or denso ? called partsource they tell me we have 1 NGK upstream 02 sensor for it. would that be good enough to use.?

Colin42

This is why you need to look at the sensor in the car. That way you get the correct one, or go to Honda and they will give you the correct one

ezone

^This.^
Hondas original sensor brands have always been either NTK or DENSO, and even thought both makers will sell you a sensor to fit, best practice is to replace it with the same brand the factory installed.




Once you know the correct brand,
look up the correct part number on that makers website,
then google that part number looking for places to purchase it.....
BE CAREFUL. Some sellers with cheap prices aren't selling you the actual brand you want. Wording of the ads you see is critical.


FYI I expect most parts stores can special order whatever it is you need in whatever brand you want.

brags

I Paid the big bucks for the O.E.M Honda 02 upstream sensor when it went on my 8th gen, 2nd option was to order online with old part # and hope they sent me the right one.? thing is im not a big online shoper though, with all the online hacking,scamming going on. i did save a few bucks buying the 7/8 22mm 02 Deep socket at this place. though i would of thought by now there would be more availability around for a Denso 02 sensor though? guess not. i changed mine almost 2 years ago. at that time i had over 170,000kms on the original oem sensor im expecting to get that again for Paying Out the big Bucks.!

https://www.princessauto.com/en/deta...et/A-p2990254e

Colin42

Amazon is perfectly fine provided you use some common sense and buy from a reputable seller, I've bought countless things from there only had a problem once and they refunded me no questions asked.

rogerscivic

i found the NTK sensor at CT paid the asking price since i did not want to waite for one online, undid the batt cables
to re-set the code running great. thanks again guys cheers"..!

brags

I went with the Honda OEM name brand when i replaced my Primary upstream 02 Sensor, Just because i have heard some

technitions give word of caution to use only the Denso or NTK 02 sensors because if the ecm dont like what it sees from an

aftermarket 02 sensor it could triger the engine light back on. sometimes its not about how cheap it can be fixed, but more

about how right it can be Fixed.

rogerscivic

i have a question for the honda tech guys? can someone tell me if it would be worth my while to change my downstream 02 sensor? for better fuel economy???

ezone

My opinion: Not worth replacing unless or until it's a verified problem.

rogerscivic

i read this online and pondered to myself about it https://forums.anandtech.com/threads...twist.2257806/

ezone

I see absolutely nothing of technical value there.

OTOH most of the replies speak volumes