The crankshaft Sensor is located at the lower right hand side of engine ahead of lower pulley
diagram E
The camshaft Sensor is located at the lower right hand side of engine above lower pulley diagram F
I have uploaded a picture of the location
HERE Yes it is most likely one or both sensors
Not that difficult to remove
I would have the car checked for codes first to make sure
You can get a scan tool at your local auto store usually they will loan you one .
Or you can read the codes yourself
Here is a great site for just that
HOW TO READ CODESI hope this helped and thank you