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I have a 97 honda civic lx with a d16y8 with no cat converter and it's showing a check engine light.the code is p0141 I bought a o2 simulator so It would take off the check engine light.but it hasn't and idk what else to try
 

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I have no cat on my 1997 DX civic and I do not have a code for the secondary O2.

borrow a known good O2 sensor, or buy a cheap one off ebay or rockauto.

It did pop up on a buddy's 96 or 98 civic ex one time, we fixed it by getting a 90degree O2 adapter for $15 off ebay. Seems the EX's are a bit more sensitive than the DX ones that have a cat for a manifold in factory form.



If you want to avoid random crap, grab an aftermarket magnaflow catalytic converter, as a stock one is old enough to be worthless anyways.


You will not notice a power difference in either case except during very intensive all motor builds.
 
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