What would you guys/girls do?

EJackBauer8

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CEL is on code P0131 I don't even know where to begin on fixing this, its been on for a week. Any help would be great. Car is a 99 ex coupe 5 speed.
 

EJackBauer8

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After I get a new o2 sensor, would the o2 sensor I have to replace be in front of the cat behind the header?
 

greenEJ6

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it depends if its a bank one or bank two code.
bank one would be before cat and bant two is after cat.
 


98ej8

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I think they're both bank one it just depends if it's sensor 1 or 2.
 

gugiey

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go to this website . it tell you about this code .
http://www.obd-codes.com/p0131

you either need a pre cat o2

or you got worse . electrical problems .

you could do a simple few tests to determine I'f you need a new sensor or I'f it's the wiring . that's I'f you have a volt meter .

or you could just replace your pre cat o2 and see I'f that fixes it .
 

TokyoSkies

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go to this website . it tell you about this code .
http://www.obd-codes.com/p0131

you either need a pre cat o2

or you got worse . electrical problems .

you could do a simple few tests to determine I'f you need a new sensor or I'f it's the wiring . that's I'f you have a volt meter .

or you could just replace your pre cat o2 and see I'f that fixes it .
This. I would just replace both sensors if you're gonna do it. May as well.
 

gugiey

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This. I would just replace both sensors if you're gonna do it. May as well.
why would you replace both ....
that's big money .

it's clearly putting a code for the pre cat 02 sensor .
there is no need to replace the post cat u2
 

TokyoSkies

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why would you replace both ....
that's big money .

it's clearly putting a code for the pre cat 02 sensor .
there is no need to replace the post cat u2
http://www.oxygensensors.com/catalog.php?&pkey=1355622

The universal fit are $40-50. In my opinion, it's just worth it to do both at that price!

I had my post cat go out, and like 2 weeks later, my pre-cat. Since then, I would just do both at the same time. Once again, just me though.
 

EJackBauer8

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Its alright guys the CEL went away by itself so I haven't done anything about it.
 

emerican

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^ it went away and you didnt do anything at all?
didnt reset the code? discount the battery anything?
 


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