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Code 63 (Secondary oxygen sensor circuit) fix?

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Old 12-15-2009, 01:41 PM
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Default Code 63 (Secondary oxygen sensor circuit) fix?

Anyone have any idea how to fix a code 63? My 99 civic is throwing it...and I can' t seem to get it to go away...

ideas?
Old 12-15-2009, 01:50 PM
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Default Re: Code 63 (Secondary oxygen sensor circuit) fix?

change the sensor, or check the circuit
Old 12-16-2009, 05:56 PM
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Default Re: Code 63 (Secondary oxygen sensor circuit) fix?

is there 2 02 sensors on the civic? or should I just replace the 02 sensor thats located in the manifold
Old 12-16-2009, 06:01 PM
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Default Re: Code 63 (Secondary oxygen sensor circuit) fix?

thats the primary, your cel is for the one behind the cat
Old 12-17-2009, 08:25 AM
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Default Re: Code 63 (Secondary oxygen sensor circuit) fix?

oh....gotcha....guess Ill swing by honda and pick one up and swap it out then...
That'd prob affect gas mileage a bit...lol
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