Lambda probe after catalyst (after-cat lambda, post-cat lambda) are designed to give feedback on the effective operation of the catalyst.
The information from the lambda probe after the catalyst is not significant for the formation of fuel-air mixture.
Problems with the catalyst or lambda probe after it, control block engine will consider problem and will go into emergency mode.
Will the deactivation of lambda probe after catalyst, leads to any problems with the car?
After intervention by us off the lambda probe after catalyst car will work quite adequate and the emergency mode due to problems with the catalyst will no longer be activated.