Hi all new here, bought a multipla 1.6 x reg, great family mpv. The check engine light is on. put it on obd2 and code po141 o2 sensor heater circuit malfunction bank 1 sensor 2. i know this is the lambda but which one is this so i can replace it. any help will be great. many thanks.

I've got a diesel so Lambda's ain't my thang but if you have two, try disconnecting one of them, this should show a fault in the same format which will tell you which one is which?
To be absolutely sure, re-connect the first one, clear the fault and then disconnect the second one, hopefully second fault will show a different sensor.

Thanks momoe will try that tomorrow. I have found 1 lambda on the exhaust manifold this is the pre cat so there should be another one after the cat the post cat lambda. will post what happens when i try what you say. many thanks.

Hi lambda replaced no more trouble codes.