need someone with scanner to check o2 sensors

[salmonsteelheadsam]

hi i was wondering if anybody that has a scanner could check my o2 sensors my girlfriends 03 jeta 2.0l threw a p0420 code wich is cataylist below threshold, might be a cat might be o2 sensor i would like to see wich one before shotgunning parts at it i could pay 20 bucks or something kind of broke or else id just take it to a shop, i think the snap on solus would read it or vag com let me know if you can help
thanks
sam

[budnate]

auto part stores up here let a guy use them for free in there lot.

[greenbuttskunk]

sam, sent you a pm.

[cmb1998]

Originally Posted by greenbuttskunk

sam, sent you a pm.

You need a special scanner for the Jetta (the VAG software is proprietary to VW cars and doesn't work with most cheap auto parts scanners, ask me how I know).

I have one that hooks up to your PC. The software and the plug were around $40. You welcome to try mine or borrow it.

Later,

Chris

[bassmaster]

Hit the cat with your hand it will sound like broken glass inside if its bad, and if the chamber turned sideways inside you would notice a big power loss. If not prolly a 02 sensor, but guessing your car has more then one, my chevy has 4

[salmonsteelheadsam]

Originally Posted by bassmaster

Hit the cat with your hand it will sound like broken glass inside if its bad, and if the chamber turned sideways inside you would notice a big power loss. If not prolly a 02 sensor, but guessing your car has more then one, my chevy has 4

yeah i changed the rear o2 sensor last week and that got rid of the p0139 code the cat isnt rattling power is up to par