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
Answer: D
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Fill in the blank(s) with the appropriate word(s).
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