Got a check engine light P0420

[4RingsFreak]

Hi my name is Garrett and it's my first post. But I could use a little help I have a check engine light on I've googled it and got back catalyst code. I'm just curious is this most likely an 02 sensor or catalytic converter? Or could it possibly be something else?
thanks

sorry its code p0420

[T0M3K]

try: http://forums.audiworld.com/vag/msgs/13062.phtml

but use local search, you may find already answered questions.

BTW, Welcome to the zine.

[4RingsFreak]

Thanks

[4RingsFreak]

Where's the best spot to buy vag-com? cable and software. it's pretty expensive on ross-tech.

[onceover]

ebay.

got mine for $16. works just fine

[4RingsFreak]

Nice. that's what I was waiting to hear. I'm ordering one now.thanks

[onceover]

make sure it has dual k-lines!

[4RingsFreak]

Cool thanks. I really appreciate it.

[4RingsFreak]

Would this work? does kkl mean double k lines?
http://cgi.ebay.com/ebaymotors/USB-C...motiveQ5fTools

[onceover]

not sure what it means, i just know you need it to work fully with audis.


that looks identical to the one i bought

[4RingsFreak]

Gotcha. I'm gonna order it. It's only $15 bucks and I'm sure it'll work.

[NyteEscape]

you won't get full functionality w/ an ebay cable. but enough to check and clear codes.

[aaaudiprotein]

Clicky

[agelosa4]

b1 s2 lamda sensor..