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Active fuel management

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I think there may be some misinformation on your part.


When the DoD/AFM is active, there are 2 cylinder per bank that shut down. One half of the engine does not just shut off, it couldn't run like that because it would be so unbalanced with only the left or right bank firing. They have to keep using both banks but they just shut off cylinders 1,4,6,7 to keep the engine happy.


But to answer the question on the o2 sensor, if the sensor is dropping to nothing. It's a good bet to say the sensor is on the fritz and you should replace it. If problems continue you have a wiring issue on your hands.

Edited by CamGTP
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