Papa Wilko

Did the new Cats completely cure the problem?

On 10/21/2021 at 7:05 PM, Wrinkly said:

having given thought to the above suggestion I am probably being very stupid but what I am having a problem understanding is that after the two Lambda Sensors (up and down stream) there are to the best of my knowledge no other Sensors in the exhaust. If that be the case then how does the "Efficiency Below Threshold" get read and eventually produce a code. The sensors being brand  new are plainly working so where is the possibility of too much air being calculated from?

Cheers, John

I would love to know how this all panned out as I have P0430!