P0430 and P0421
02-27-2008, 05:42 AM
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P0430 and P0421
Have been haunting me since I had awe do my DP's and twin 1. All O2's have been replaced. I was told the cats were good. Now I can't pass emissions and am beginning to think maybe they were bad out of the box. I let this go for a while, because it wasn't that big of a deal for me. Does anyone have any idea of what else this could be aside from bad cats, or an exhaust leak? I have till Friday to get the car inspected.
02-27-2008, 08:13 AM
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You may have an exhaust leak upstream of the cat...
I find it hard to believe that the catalytic
converter is bad, but it is not unlikely either.
Check for exhaust fumes coming around the car just
to make sure.
converter is bad, but it is not unlikely either.
Check for exhaust fumes coming around the car just
to make sure.
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