CEL 67? Catalyst system Efficiency Below Threshold malfunctioning or defective catalyst system

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02-23-2007, 07:27 PM

xunkn0vvnx

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CEL 67? Catalyst system Efficiency Below Threshold malfunctioning or defective catalyst system

I threw a check engine light - 67 - P0420 - Catalyst System Efficiency Below Threshold. Suggestions on fixing this problem? Thanks

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02-23-2007, 07:48 PM

SimplyB18C1

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I got this code recently. I had a clogged catalytic converter. Replace your catalytic converter.

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02-24-2007, 02:28 AM

xunkn0vvnx

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Re: (SimplyB18C1)

Do you think it could be oxygen sensors?

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