mgreenb561 what was your final resolution? I just had the same experience today
Driving about 35 MPH, car stalled, would not crank. Could not get any codes with my reader or by turning key on and off. New battery (3-weeks old) Full charge. Accessories work (windows, fan, lights, radio etc)
Someone suggested disconnecting neg cable to reset. Still the same.
Checked all fuses and switched around the relays.

see what your missing spark or fuel first

03 pt won't crank
 

Jumped pin 30 and 87 fired right up, went and got a new relay and won't crank still. What could it be?

try to remove the wire from solenoid