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P0134 code after new O2 sensor

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Old Nov 15, 2015
  #31  
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Re: P0134 code after new O2 sensor

Originally Posted by ezone
Ok the primary sensor (AF sensor) is #7 in this parts catalog pic




You can look up your own car and double check if you want
http://www.hondaautomotiveparts.com/


P0134 and P0135 represent (define) two different failures, but both have to do with the primary sensor.

Unfortunately neither of those links work for me.


So if I understand you correctly, both OBD codes require a repair to the same sensor, in which case the part that worked for a P0135 problem would also fix mine?


Another terminology question: is "upstream" what I want?


I did a quick search through the DENSO catalog and it has the 234-9005 part listed under Upstream Air Fuel sensors for the D17A1 engine.


That look ok to you guys?


Thanks again for all the help.
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Old Nov 15, 2015
  #32  
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Re: P0134 code after new O2 sensor

Originally Posted by RotorBeav15
Unfortunately neither of those links work for me.
Site blocked in your country? Damn. VPN?


So if I understand you correctly, both OBD codes require a repair to the same sensor, in which case the part that worked for a P0135 problem would also fix mine?
P0134 is defined as AF sensor B1S1 no activity detected
P0135 is defined as AF sensor B1S1 heater circuit fault

There can be many different fault codes to cover many different ways a sensor can fail....

AND it does not have to be a bad sensor at all....The computer sees an incorrect input as a fault related to a particular sensor or system so it sets a fault code (as programmed by the engineers that put it together), but it cannot always know the exact cause.



Could a rodent chew a wire harness and cause a fault code? Absolutely. Would a replacement sensor fix that?
Blown fuse or bad relay = no power to sensor
See where I'm going with this?

Codes are only a clue. A person has to (or should) figure out the actual cause.

But it's pretty likely to be a bad sensor.

Another terminology question: is "upstream" what I want?
Yes.
The word describes the position of the sensor in relation to the flow of exhaust.

Upstream
Primary
Front
First
Pre-cat
Leading
Sensor 1
B1S1
and probably more
All indicate the same thing.

I did a quick search through the DENSO catalog and it has the 234-9005 part listed under Upstream Air Fuel sensors for the D17A1 engine.
That look ok to you guys?
I came up with the same number

HTH
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