Focus Fanatics - View Single Post - Diagnosing P0420 ?
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Old 02-15-2014, 06:16 PM  
Focus Jr. Enthusiast
Join Date: May 2013
Fan#: 114217
Location: Ranier, MN
What I Drive: 2007 black ZX3 ses

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P0420 most often a evaporative system leak,,,,start by thoroughly inspecting all fuel and vent lines from the fuel tank forward and under hood. Code indicates a evap leak!!
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