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Does anyone have a Gen2 service manual they can look this up for me?
I don't, but the trick of wrapping a resistor wrapped around the air temp sensor terminals should still work on Gen 2 as a last resort. Had that on my 2011 for about 6 years now. Getting ERDTT on short local trips or just pulling out of the garage always bothered me.
 

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I wasn't able to get a resistor to fit between the terminals on my Gen2's sensor and still have the sensor able to be plugged in, but someone else may have smaller resistors on hand. You also need different values, 22kohms should work down to -40 degrees (F or C).
An 1/8W 39K Ohm resistor should fit
 
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