Rep Power: 0

im looking on amazon for a replacement pre cata or upstream o2 sensor to buy.

P0135 o2 sensor heater circuit malfunction (bank1 sensor 1)

however, none of the o2 sensors on amazon state which sensor it is...is it upstream or down? i think this code is for an upstream right?

Can someone please hit amazon for me and link a cheap o2 sensor replacement with the oem plug please?

thanks

 
Rep Power: 201

upstream for the front and downstream at the cat converter
use oem plug and play
dont go with the splice and connect ****
it doesnt work
remember when buying a quality product like o2 sensor use bosch or denso
cuz these product last you over 10 years
once you replace it you can forget about it till you go grey

 
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thats a good chunk of info but it doesnt really help me. i need to know exactly which o2 sensor to buy from amazon. none of the o2 sensors listed on amazon are marked as to which sensor it is.

 
Rep Power: 513

Give us your year, make, and model, then we'll be able to help you.

 
Rep Power: 236

There are 2 circuits in the sensor. 1 for the sensor reading and 1 for the heater. The heater is there to heat the sensor so it will go into closed loop and start affecting fuel trim to cut emissions. Before, when the heater circuits were not in the sensors you had to wait until the whole emissions system was hot before it would go into closed loop.

That being said, P0135 is for the heater side of the sensor. Meaning the sensor is probably ok and you probably have a short in one of the wires from the sensor to the ECU or a bad connector. Get a service manual and it will give you step by step diagnosis. You can download the service manual on this site or Honda-tech.com or order a paper one here: http://www.helminc.com/helm/homepage...&usg=AFQjCNFpm

In my opinion the paper manual is worth every single penny. You may have to pay $50 now but, it will save you money in the future. Maybe even with this repair if it's a bad wire.

BTW: Hondas hate aftermarket sensors, go with OEM.

 
Rep Power: 201

im pretty sure amazon has a fitment test where you put in your vehicle info
i just told you that you need upstream replacement
i cant find it on amazon if i dont know the type or car you have buddy

 
Rep Power: 513

Here are the OEM part numbers for your car (link to the sensors is within the pic)

Upstream: 36531-P2E-A01 (#8 on the drawing)
Downstream: 36532-P2E-A01 (#9 on the drawing)

 
Rep Power: 236

Ok, forget my last post. Just realized the OP has no sensor.

 
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lol laz i saw his other thread

 
Rep Power: 201

ahh 97 dx

 
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http://www.amazon.com/Denso-234-9005...DateDescending
there if you read the reviews and comments
people will say they used it on the primary
so its upstream bank 1

 
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thanks for the replies. yea lol sorry i forgot to put in my car info. this pos is driving me nutz. 97 civic dx 4dr.

how about this one?

this one is upstream right?

http://www.amazon.com/Denso-234-4099...pr_product_top

hard to tell cause its not really specified in the desc anywhere. looks like the reviews say its upstream or primary.

 
Rep Power: 236

Try here: http://www.rockauto.com/ Same price with description.