Fixing a Subaru P0420 - the cheap and nasty method
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YouTubeRod Maher
Fixing a Subaru P0420 - the cheap and nasty method
This low kilometer Subaru Impreza flags a P0420 Catalyst efficiency fault code very quickly. The rear O2 sensor would behave almost like the catalytic converter had been removed. Replacement engine pipe with integrated converter is not available aftermarket and is $2200 dollars for genuine replacement. It just so happens that Subaru keep a good ...
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