Ford Focus Forum, Ford Focus ST Forum - View Single Post - Replaced rear 02, still throwing CEL codes?
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Old 11-20-2012, 11:14 PM   #19
Focus Jr. Enthusiast
Join Date: Jan 2011
Fan#: 82003
Location: Jacksonville, FL
What I Drive: 02' Silver SVT

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Also something I've ran into as-well check your vaccum lines and make sure none are broken.. also check the large one near the throttle body it's a black rubber hose make sure it's not slit. Mine was.. I know it's not O2 related but it's something I would still check.
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