Can i replace the camshaft sensor on my sebring

Question edited for clarity.
Question moved to 'year make model' category.

It located under the timing belt cover and is the central pulley between the two camshaft sprockets. It is not a job for the faint of heart as keeping the cam sprockets locked on place is essential.

Diagram here

https://www.justanswer.com/chrysler/1vsyc-replace-water-pump-timing-belt-1996-chrysler.html

More here

https://www.google.com/search?q=1996+Chrysler+Sebring+LXI%2C+water+pump+location

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They should in the exhaust pipes just before the catalytic converter

Well the sensor should be on the drivers side just under the valve cover and it looks like a circle with a plug in it.I think your problem though is the timing belt is off a tooth it will run fine but being a tooth off will keep that light on.

the 3.0 is known for head gasket problems , also check or change wires.

what is the problem?

The camshaft position sensor for your vehicle is located in the distributor housing. It is serviced only as a complete distributor assembly, individual parts are not available.

The manufacturer (dealer) suggested retail price (MSRP) for the distributor assembly (Part Number MD345492) is $1100.00 (US).
The standard flat-rate labor time to replace it is 0.8 hours.
(you will have to figure the labor cost depending on labor rates in your area)

AutoZone has remanufactured distributors listed for your vehicle at a cost of around $275.00.

CARDONE part number 84-49600 is a NEW distributor and lists for $425.00

Ask the dealer mechanic to replace the camshaft position sensor again. Remind them that just because it's new, doesn't mean it works.

They should also check the wiring from the ECM to the sensor for continuity, to ensure that the ECM is actually seeing a signal and it's not being shorted somewhere.

they are behind the cam shaft gears you have to remove then and put the car back in time you might want to go down and get a book to show you timing marks

It is built into the distributor assembly

Fig. 2: Location of the crankshaft position sensor on 2.4L engines