Hi Guys,
I have just failed an MOT on CO emissions with the lambda sensor being thrown out on both the fast and slow idle.
I have a fault code P2A03 pending which I checked after the fail which reports on O² sensor bank 2 pos 1 which I believe is an air fuel ratio sensor.
The question is is it being thrown out of range by the intake system?
I can just change it but its an expensive part if it turns out to be something else.
Your help would be appreciated.