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Old 02-07-2012, 05:56 PM   #21
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Also read another bulletin on the focus that a P0420 could be caused by a high oil level? I checked and yeah, its a half quart or more over the line so did an oil change. I haven't seen the P0420 re-appear yet. Getting close to the 100 miles since reset so should be good for emissions testing soon.
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