My CAT fell off! - 2007 Volvo XC70

[cmayo1]

This is all great info!

I'll look into the bung and keep my old CAT (if they haven't thrown it out already). I would have done this myself, but just needed it done.

The bung sounds like a good solution, I'll try that if I get codes. Still don't have the car yet.

What specifically for the CAT trips codes? I understand the o2 part of it, but not the CAT part

[abscate]

You will get a cat efficiency code ; P0440 I think??

The system continuously monitors oxygen content in the down stream exhaust and will code if it is missing

[cmayo1]

Thanks for the info. I'll post more once I get the car back.