2001 Ford Fiesta Po420 Catalyst System Efficenay Bewow Threshow

2001 FORD FIESTA
54,000 MILES
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po420 catalyst system efficenay bewow threshow
Dec 27, 2012 at 8:16 AM
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CTASQUIER
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P 0420 exhaust catalyst effiency below threshold.
this means the catalytic converter on the exhaust system is not working as it should and should be replaced.
Jan 16, 2013 at 1:31 PM
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