Question about 2000 Honda Civic

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Code po131 idles down then surges a little then pops code po131

This code had gotton worse it use to come on monthly now every time it idles down i replaced the 02 sencer today and i still get po131 when i erase it and start the car its fine but when it idles down to where it should be it surges about 200 rpms up and down then pops a code and rund idles fine i have a 2000 honda civic si dohc b16

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I had the same problem, replace O2 sensor does'n fix the problem.
I replaced fuel pump, and it solves the problem

Posted on Jun 27, 2013

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Its a shorted out o2 sensor

Posted on Jan 24, 2009

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