quattroworld.com Forums: Front sensor doesn't cause a P0420. Only the rear sensor. Maybe try a mini-cat?

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Front sensor doesn't cause a P0420. Only the rear sensor. Maybe try a mini-cat?
Posted by: old guy (3316) on 2014-10-13 18:36:43
In Reply to: Getting P0420 Catalyst system efficiency below threshold again posted by AU02DI on 2014-10-13 13:40:57
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