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Check engine lite came on, code P0400, egr malfunction. Checked vacuum and exhaust flow at egr ports, all ok. Replaced egr valve, did drive test, check engine lite came on, same code. Want to check connections at ecm/pcm, but can't find it. Also, any other suggestions on why the code comes back? I need to get a smog cert. for my license plates. Thanks!
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Looks like something as minor as bad plugs can give you this error. Check on http://www.mazda626.net/topic/30232-626-... for more information about your error code. Good Luck with your inspection.
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