FWIW, here's my train of thought. You had an alignment done, then you have this problem. Chances are if something got damaged, it's in the front and whoever did your alignment might be responsible. Might not be the sensor; could be the wire loom leading to the sensor. As far as I know, the diagnostic codes only differentiate left/right (not only on the JK, on many Chrysler vehicles).
U1417 - Implausible Left Wheel Distance Signal Received
U1418 - Implausible Right Wheel Distance Signal
Here's a link.
And a similar case here.