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12-10-2012, 11:05 AM
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#17 (permalink) |
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Registered User
Join Date: Nov 2012
Location: fairfax
Posts: 10
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did my yearly maintenence, including spark plugs..so it doesnt have to do with spark plugs. if your plug weren't firing you would definitely know by vibrating or driving .then 420 comes up .. So, for someone with 0420 code on 2003 mdx? it's most likely cat convertor replacement? anyone know how much the part was and cost at dealership? i don't think going non oem on a cat convertor would be reliable.
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