2004 3.5L Camshaft Sensor error code P0021 - Tested the ohms

[PathfinderGuyBC]

I checked the error codes since the check engine light was on. It read P0021. I cleared the code and took apart both Camshaft sensors to take a look and some measurements...

The sensors each have 3 prongs when unplugged. Do I test the resistance between any the 2 prongs of the sensor? or between 1 prong and the corresponding plug? Many thanks for any clarification.

I did a measurement test and could only get a reading between 2 prongs of the 3 prongs on either sensor. Both readings are 1240 ohms. Currently temperature outside is 41 degrees F.

Side notes... I recently purchased this 2004 pathfinder. Since I cleared the code I did an oil change (oil was low due to a oil cooler pump leak but I replaced both seals and the leak is now fixed). I also noticed the one of the sensors (passenger side which I believe is Bank 1) possible has a small oil leak. I've tightened the bolt holding in this sensor by one full turn, but still a small leak. Cant distinguish if the leak might be from the gasket of the top of the cam cover. Any experiences with this?

If I am needing to replace the sensors, does any one have recommendations on reliable sites? The dealerships in BC, Canada charge $144 + tax for each sensor. I've seen them online from $15 to $90 USD. Thanks again.

[PathfinderGuyBC]

Maybe my first post was too long winded. I was curious what the resistance reading should be for each of these Camshaft Sensors? I got a reading of 1240 ohms while the truck was cold.

Any advice? Thanks.

[atraudes]

Actually it sounds like you may be barking up the wrong tree Check the FSM, page EC-169 for more information on P0021. The first troubleshooting step has you checking the resistance of the two prongs and then ground and the two prongs of the Intake Valve Timing Control Solenoid Valve. Run through those troubleshooting steps and see where it gets you. That whole section will give you some good info on what the code means.

Good luck and let us know what you find!