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Hi All,
My daughter just bought a 2010 Volvo V50 2.4i, its pretty nice but a check engine just went on with code P0420 (The Cat) I'm wondering if an aftermarket Cat will work well on this car, as we need to get it past inspection, and cannot do it with check engine light on, thoughts
Thanks
Matt
 

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2007 S40 2.4i / 2007 C70 T5
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The ECU doesn't tend to like aftermarket catalytic converters. It's very "special " when it comes to things like this. My 2.4i used to (knock on wood) throw that error every once in a while, and then most frequently after my mom borrowed the car for almost a month. During that time, she drove it very gently. I bet the engine never revved higher than 2500 rpm.
The error stopped coming back after I did a 400 mile round trip, on which I may or may not have reached speeds of 3-digits. Since then everything has been working fine.

Maybe this V50 needs a good old-fashioned italian tune-up.
 
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