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International Automotive Technicians Network
Re: Code P0420
Posted to Technical Discussion Forum on 9/9/2012

I wouldn't say the same thing about any make. My experience has been...this code = this part. There's about 3 to 4 very common engine codes that set on Subaru's and that's all I see on those cars. Like I said before, 95% of the time you do not need a factory s... Login to read more.