2003 pt cruiser sensors

yes, tacho also runs off that sensor.
I trust you disconnected the battery before you pulled the starter?
If not you may have fried a module or 2 and possibly even the computer.

Make sure your cam and crank timing is correct, might have changed when you had the head off.

The cam and crank sensors have the same power wire. Go after that one. They also have the same ground, but other sensors connect to it also. So it's not the ground. And they have separate return signal wires. Not them either.

When you have no spark at the coil,Then coil needs power from ignition which is supplied by the ASD relay,you also need a ground signal this is from the PCM,which recieves its input from the cranksensor, which is located,under the starter,Check for open fuses especially ignition fuse, and make sure the harness to the crank sensor is good,

they can run with out a cam sensor but they will not run with out crank signal i would check for crank signal it may not throw a dtc because it wont start.

Make sure battery has a full charge. Have a helper crank it, while you visually check for spark at the spark plugs. If spark everywhere, use a gage and check proper fuel pressure. Also, check fuel injector pulse.

On this type of vehicles' "Diamler-Chrysler" for some reason the Crank and Cam sensor go bad at the same time but it will still tell you its either one or the other, if you are still getting the Cam sensor trouble code, try replacing the Crank Shaft Position Sensor, I just had a Dodge vehicle with the same problem but in reverse, it kept saying Crank Sensor but it turned out it was the Cam Sensor. Good Luck.

Check for spark and fuel.

Is it a Chrysler 2001 PT Cruiser or a 2004 Chrysler PT Cruiser?

Crank sensor controls fuel not sprark. Check the cam sensor, this sensor is usually on the head of the engine. Check for this sensor on the top left or right sides of the engine (it depends if turbo/none turbo). Another issue that may cause no spark is failed ignition coil. The ignition coil is on top of the engine, with 4 wires routing to the spark plugs. Hopefully this helps!!

make sure auto shutdown relay isnt burnt out..also have it checked for a bad crank/cam sensor