oxygen sensor?

[nhop10]

done a quick search but nothing. i had my car hooked up to vagcom today and came up with a few fault codes. one for an oxygen sensor? anyone know what this is and could it be causing my dodgey idling on start up?

cheers

[ant_gti]

oxygen sensor=lambda sensor its screwed into the cat 

[nhop10]

oxygen sensor=lambda sensor its screwed into the cat 

cool cheers. so surely shouldnt have an effect on the starting and idling issues..

[itavaltalainen]

which engine have you got, i.e. engine code (and don't come back saying a 2.0 8v)?

[madsb]

Not the most likely reason for an uneven idle. Search for threads on this.

[nhop10]

which engine have you got, i.e. engine code (and don't come back saying a 2.0 8v)?

AGG

[sharki786]

Lambda sensor will make the car hunt (bounching revs) been there

[nhop10]

are the lambda sensors the same on the 2litre and the vr6? mates got one breaking atm

[sharki786]

Not sure. You could always look on eurocarparts???

[spudboy6]

Have checked and compared pt numbers and they do use the same sensor .
Lambda is constantly changing the mixture of air/fuel and of not reading correctly / working will give you a rough idle.  But more than likely its a dirty inlet / throttle as when a lambda sensor fails it will run a factory safe mode to the lambda to prevent over fueling and burning the cat out