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Hey there,

newbie here and I was wondering if you all could help me out. I just bought a 2009 Subaru WRX a few days ago and it’s been good so far. Today though, the CEL came on along with the dynamic stability control light, and the cruise control was flashing as well. I got it scanned and the codes are P0420, C0057, and C0047. The car was modified by the previous owner a bit. There’s an Invidia downpipe, a Tomei exhaust, I believe a stage 2 tune, and a Cobb air intake. As far as I know, these were all installed by a shop and a professional tuner so I figured everything was okay when I bought it. I’m not all that concerned about the P0420, but the C0057 and C0047 do concern me a bit. I was wondering if any of you guys had any experience with these codes specifically and could help me with a fix for them?

thanks
 
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