Need to know where the Cam shaft sensor is located on the 2004 Nissan Sentra 1.8

bank 1 cam shaft position sensor ? you have one bank .This vehicle does not have a cam sensor . The ICM provides a synthesized cam signal to the PCM.

the 2004 sentra
correct not listed as
Swirl control valve position sensor online
none on ebay etc
if no other nissan vehicle part listing
to suit the sentra

possibly discontinued part
might need to source a used one from a wrecker

P1137 2004 Nissan Sentra Description Swirl control valve position sensor is installed on the intake manifold.
The sensor is connected to the front end of the valve shaft of the swirl control valve.
The sensor responds to the valve shaft movement. This sensor is a kind of potentiometer which transforms the swirl control valve position into output voltage, and emits the voltage signal to the Engine Control Module (ECM).

Read more: http://www.autocodes.com/p1137_2004_nissan_sentra.html

on a 4 cyl is very easy, Nissan recommends replacement of both the crank and cam sensor together, but the crank sensor is in the back of the engine, near the transmission bell housing under the engine mount bracket. the cam sensor is in the back of the cylinder head and both have 1 bolt each, 10mm.

You need a repair shop to diagnose the real issue

Not throw parts at something you don't understand at all

You can't work on a vehicle by asking someone to tell
you how & were things are,really !

Check this diagram location...



Image Zoom link HERE.

Hope this helps; also keep in mind that your feedback is important and I`ll appreciate your time and consideration if you leave some testimonial comment about this answer.

Thank you for using FixYa, have a nice day.

THE TPS SENSOR LOCATED ON THE END OF THE THROTTLE SHAFT ON THE THROTTLE BODY.

I would google the code and see what other owners did to correct the problem. It may be an electrical short or lose connection in harness.

yes cam sensor is located in the distributor best way is to replace distributor .you will need a 12mm wrench. and a Philips screw driver. first mark the position the base is at because its adjustable.remove the cap with wires still attached and move it to the side.remove the rotor in the center.remove the distributor. upon istalation of new one the slot at bottom of distributor only goes on in one position then reinstall rotor and the cap.

Go to dealership they will give a diagram to locate every single one. I replace them on my daughter car. I believe there were three sensors. I exactly know what you are talking about. I had a hard time locating the back one right above the drive shaft on driver side.

will the crank sensor cause the vehicle to shut down while running?