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P0420 catalyst system efficiency below threshold bank 1P0420 catalyst below threshold on bank 1 P0420 bank catalyst threshold below f150online forumsFile:brand new ford focus 1.0 ecoboost (2014) (16063440736).jpg.
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98,000 miles - intermittent P0420 - solved - Ford Focus Forum, Ford
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P0420 Code - Ford Focus Club - Ford Owners Club - Ford Forums
File:Brand new Ford Focus 1.0 Ecoboost (2014) (16063440736).jpg