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P0420 Cat Code vs. CATACLEAN - I think it worked?

By A Mystery Man Writer

Description
My X is a 2011 with about 107k miles. Ever since I hit 103k or so, I've been getting intermittent P0420 code (passenger side cat). It first turned on for 100 miles on a road trip, and then went away for next 1000. Then it came back on for a week, off for a week, and has been like that for the
P0420 Cat Code vs. CATACLEAN - I think it worked?
P0420 Cat Code vs. CATACLEAN - I think it worked?
P0420 Cat Code vs. CATACLEAN - I think it worked?
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