Testing a Lamda sensor

[Jones]

I have the toxic emisson warning light on in my car and im guessing that its one of the Lamda sensors that has packed up, is there any way i can test them, ie with a multimeter or the like

 

[16v_jon]

normally the first one that goes , you need an Oscilloscope to test them properly but if you stick a multimeter in and its running above 1 volt then they are gone.
best thing is to get the car plugged in to see whats up with it

 

[Lunner]

if they rattle they are fucked, if not ok.....usually

 

[Jones]

normally the first one that goes , you need an Oscilloscope to test them properly but if you stick a multimeter in and its running above 1 volt then they are gone.
best thing is to get the car plugged in to see whats up with it

So the best thing is just to get it on the 'clip'?

 

[Jones]

normally the first one that goes , you need an Oscilloscope to test them properly but if you stick a multimeter in and its running above 1 volt then they are gone.
best thing is to get the car plugged in to see whats up with it

I take it the first one is the one which is pre cat

 

[G_F]

I take it the first one is the one which is pre cat

Yes