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Bank 1 is the bank with No. 1 cylinder which is the firewall side and toward the passenger side, so bank 2 is toward the radiator. Sensor 1 or upstream is the highest one. You don't need the special slotted socket for this job but you need small hands to undo the pigtail.

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โˆ™ 2008-08-01 04:41:48
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Q: Where is bank 2 sensor 1 located on a 1998 Mercury Mystique?
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