trouble code PO340 cam sensor where is it located on 2001 Mercury Sable

in the report it says replace magnets and syncronisers are these inside the cam sensors

1 answer
Which engine do you have? 3.0L OHV (engine code U in the VIN) or 3.0L DOHC (engine code S in the VIN)?

The synchronizer is like a distributor at the back of the engine. Has the cam sensor there too.