2001 Ford Fiesta Repair Question
Topics covered: Exhaust, Catalytic converter.
Mileage: 54,000 miles.
Mileage: 54,000 miles.
Asked on December 27, 2012
Ford Fiesta Exhaust Problem
Po420 catalyst system efficenay bewow threshow
Asked by (pending member)Answer
Replied on January 16, 2013
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.