2012 Taurus SHO - O2 Sensor Signal Biased/Stuck Rich (both banks 1+2)

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jaxtmann18

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I have been pulling codes P2196 and P2198. I know the we have the two MAP sensors that sit on top of the manifold and the other between the (intake?) leading to the manifold (throttle body?).

Should I just be replacing the one on top of the Manifold? I have 140,000 miles on the vehicle and as far as I am aware it has never been replaced. Do these two both take the same part? (doubtful, but my googling hasn't lead me to be able to discern the difference between what each of the sensors is *doing*.) I don't think it's wiring damage, as far as I can see. Would it be weird for both banks to be pulling a rich code?

Any advice is appreciated! Thanks!
 
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