Left side won't unlock passenger side
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Door locks
I just repaired the same problem that you described. All power for both doors are controlled by the Driver's door switches but have separate fuses for windows and doors. From the info. you provided my guess would be the Drivers side switch need's replacing, It is used the most and you have power to your passenger side. I agree with ghOstman, Rock auto sales them and they are half the price of the Dodge Dealer for the identical item.