7th Generation Civic 2001 - 2005 In the years from 2001 to 2005 Honda released it's 7th Generation Civic.
Chassis codes: EM2, ES1, EP3, EU1

P0135

 
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Old May 14, 2017
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P0135

CEL just popped up, P0135 O2 Sensor Heater Circuit Malfunction (Bank 1 Sensor 1). Should I just change that sensor, or there is some other problems could be? I believe there is a small exhaust leak at the muffler, can that throw P0135 code?
Thank you.
Old May 14, 2017
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Re: P0135

9 out of 10 just need a new sensor, you can ohm test the heating element to see if it's open circuit.....

Use correct sensor type (01-03= O2, or 04-05= AF) and OE brand though (Denso or NTK).
Old May 15, 2017
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Re: P0135

Hello ezone. Do you know if I can use upstream sensor from D17A7?
Thank you.
Old May 15, 2017
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Re: P0135

Originally Posted by ezone
9 out of 10 just need a new sensor, you can ohm test the heating element to see if it's open circuit.....

Use correct sensor type (01-03= O2, or 04-05= AF) and OE brand though (Denso or NTK).
Ezone, please take a look at ROCKAUTO page -
http://www.rockauto.com/en/moreinfo....&jsn=32&jsn=32
there is DELPHI ES1093 upstream sensor for Civic EX, but somehow this sensor covers many more part numbers, you can see it on the page, part number for Civic DX is also there - 36531PLM306. Same thing I found on Ebay descriptions, they selling cheap sensors I am not going to buy, but their sensor also covers a lot of cars, even some Acuras and CRVs. Does that mean Honda uses same sensor for many cars?
If that's the case, I have a lot more choices to buy it. Long story short, I just want to buy this one for my DX - http://www.rockauto.com/en/moreinfo....&jsn=31&jsn=31
Please take a look.
Thank you.
Old May 15, 2017
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Re: P0135

What car do you have, exactly?
Old May 15, 2017
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Re: P0135

Canadian 2005 Civic dx, MT, D17A1, O2 upstream sensor located in exhaust manifold. RockAuto seems a bit confusing, some sensors cover many cars.. They are probably same sensors, my only concern is the length of wire, I think resistance of the wire should be exactly the same, but it could change with different length.
Old May 15, 2017
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Re: P0135

05, your upstream sensor is an AF ratio sensor. Denso brand.


No Delphi. No Botch, Wells, or other brands.

Use a correct DENSO brand AF sensor. (Denso is OEM)
I went to the DENSO website and looked up your car info and got this sensor number from their site.

Denso 234-9005

^Google that^ But stay away from cheap imitations

You can probably get the exact sensor TOMORROW at many of your local parts stores.


Old May 16, 2017
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Re: P0135

Thank you ezone. Local stores charge too much for it, I will try RockAuto or Amazon )
Hopefully I won't harm cat converter, driving for a few days with bad sensor?

Last edited by Civic4me; May 16, 2017 at 05:41 AM. Reason: Adding details
Old May 16, 2017
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Re: P0135

As a fellow Canadian - definitely get it off Amazon .

I had to replace my upstream A/F sensor last year and the best price
I could get around town was over $350 for a pathetic Bosch.

Checked amazon and they had the OEM Denso for $175.
Old May 16, 2017
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Re: P0135

Originally Posted by RustyShackle
As a fellow Canadian - definitely get it off Amazon .

I had to replace my upstream A/F sensor last year and the best price
I could get around town was over $350 for a pathetic Bosch.

Checked amazon and they had the OEM Denso for $175.

I know, parts in Canada way more expensive.. I am even considering visiting local junk yard, they charge $10 for O2 sensor, I will probably go there first )
Old May 16, 2017
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Re: P0135

I had the same P0135 code last week and replaced my sensor with a Denso. But my part# is different, 234-9017. I thought Amazon sells your part for $96. Maybe it costs more to buy in Canada? My replaced sensor was also a Denso. I bought a sensor from local parts store for $230 since I didn't want to wait for a sensor from Amazon(afraid of cat damage).

My local parts store loaned me the sensor socket. It has 2 drive sizes, 3/8 and 1/2". I used 1/2". Drove up to the ramp and worked from under it took less than 15 minutes.

Last edited by siliconvalley; May 16, 2017 at 10:59 PM.
Old May 16, 2017
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Re: P0135

Originally Posted by siliconvalley
I had the same P0135 code last week and replaced my sensor with a Denso. But my part# is different, 234-9017. I thought Amazon sells your part for $96. Maybe it costs more to buy in Canada? My replaced sensor was also a Denso. I bought a sensor from local parts store for $230 since I didn't want to wait for a sensor from Amazon(afraid of cat damage).

My local parts store loaned me the sensor socket. It has 2 sizes, 3/8 and 1/2". I used 1/2". Drove up to the ramp and worked from under it took less than 15 minutes.
Thank you for information, and yes - in Canada everything is more expensive, and some things like R-134 you can't even buy without license. I used to buy R-134 at US walmart, but was very surprised when found out about restrictions in Canada. That's how socialism works for people, I guess, you pay more to get less.
Old May 16, 2017
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Re: P0135

Originally Posted by siliconvalley
I had the same P0135 code last week and replaced my sensor with a Denso. But my part# is different, 234-9017. I thought Amazon sells your part for $96. Maybe it costs more to buy in Canada? My replaced sensor was also a Denso. I bought a sensor from local parts store for $230 since I didn't want to wait for a sensor from Amazon(afraid of cat damage).
You have an EX w/D17A2, OP has DX w/D17A1. Different sensor wiring so different part numbers.
Old May 16, 2017
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Re: P0135

Thanks Ezone. I didn't even know my 2004 EX has a D17A2, also a VTEC!
 




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