can the PO402 code for the egr valve

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Sep 5, 2004 | 12:53 PM

hmustang

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Joined: May 1999

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From: Kansas side of the greater KC area

can the PO402 code for the egr valve

Can this code that says egr excessive cause the cats to clog up if run this way too long.

Sep 5, 2004 | 08:59 PM

hcmq

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From: Maryland

most likely not because excessive EGR usually means a lean condition. Which I believe will not harm the cats.

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