Well I found a little exhaust leak. A weld burned through holding the data tag on the lower bend of my crappy Pacesetter header. Anyone else ever had this happen? It's been on there for several years. I'm just gonna weld a little patch over it, so fixing it's no biggie, but I'm wondering if it might be causing the occasional P0420 code I get.
Yeah, Hytenor nailed it. Clean it up, weld it up and your CEL should go away.
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