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Honda Civic / Del Sol (1992 - 2000) EG/EH/EJ/EK/EM1 Discussion

PO420 code???

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Old 02-07-2011, 05:11 PM
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Default PO420 code???
what can be done to fix this or what part needs to be replaced???
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Old 02-07-2011, 05:20 PM
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Default Re: PO420 code???
Generally this code means the cat is dead, though check for an exhaust leak before replacing it.
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Old 02-07-2011, 05:21 PM
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Default Re: PO420 code???
exhaust leak or cats clogged
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