What is indicated if long-term fuel trim (block learn) numbers are higher than normal? A. The PCM is operating in open loop most of the time. B. The PCM is operating at base timing most of the time....

What is indicated if long-term fuel trim (block learn) numbers are higher than normal?

A. The PCM is operating in open loop most of the time.

B. The PCM is operating at base timing most of the time.

C. The PCM has learned to compensate for a lean tendency and is adding fuel to the base fuel calculation.

D. The PCM has learned to compensate for a rich tendency and is subtracting fuel from the base fuel calculation.