If There Is an Exhaust Leak Ahead of the Rear

Multiple Choice

If there is an exhaust leak ahead of the rear HO₂S, or if the rear HO₂S is faulty, which of the following can result?

A) An inability to run the catalytic converter monitor properly
B) Improper control of the engine's air/fuel ratio resulting in an incorrect lambda value
C) The production of too much CO₂
D) Both A and B