What has to be taken off to replace Camshaft Position Sensor. I drove it for a little bit after finding out it was bad and am worried I did some damage to the engine. Auto Zone got the code for me then I drive it home a few miles that before it stop running. It was in limp mode.

 

The Camshaft position sensor is internal of the dist.
Hard to test it with out a scope or good scan tool. A meter won't switch fast enough to show the pulses.
The first step of diagonse is to reset the code and test drive again to be sure it isn't an intermittant problem. disconnect and reconnect the wire harness at the dist, maybe just a weak connection.
Also be sure the spark shield disk is still in the dist under the rotor. Seen that movie. LOL

 

2003 doesnt have a distributor. Direct ignition...

Having said that, mine hasnt had that problem, so I dont know where it is.

 

Best I could do... 6 and 7 are the "TDC Sensors"