02 pathfinder camshaft position sensor

[Andrew450trx]

Code 0021, I'm learning that it might be one of the camshaft position sensors, what I'm not sure of is how many there are. I'm calling different auto part stores and getting different answers. One store said 2, another says 3, and the last one I called said 4. Anyone have the right answer?

[fleurys]

My readings in the fsm tells me that there is only 1 camshaft position sensor.

Here's the description :

The camshaft position sensor (PHASE) is located on the engine
front cover facing the camshaft sprocket. It detects the cylinder No.
signal.
The sensor consists of a permanent magnet, core and coil.
When engine is running, the gap between the sensor and the
camshaft sprocket will periodically change. Permeability near the
sensor also changes.
Due to the permeability change, the magnetic flux near the core is
changed. Therefore, the voltage signal generated in the coil is
changed.
The ECM receives the voltage signal and detects the cylinder No.
signal.


If you want to check if it is the culprit; disconnect it and measure the resistance between the 2 connectors. Here's the numbers you are looking for :

(IF IT IS AN HITACHI), resistance should be between 1440 and 1760 ohms
(IF IT IS AN MITSUBISHI), resistance should be between 2090 and 2550 ohms

these numbers are assumed for an outside temp of around 68 degrees.

S.

[asnorton44]

Code 0021..could be IVT timing solenoid...also how is your oil level are you due for an oil change?

[fleurys]

I checked for you at courtesyparts and it seems there is 2 after all... but depending on your manufacturing date, they are not at the same place..

Have a look here : http://www.courtesyparts.com/pathfinder ... _4733.html

[Andrew450trx]

Thanks everyone for the help. Oil was slightly low so I added a little and rotated the sensors to see if I get the code for the other bank. Driven about 25 miles and light still out, we will see

[cobraangel97]

Ok, I have an 01 QX4. The check engine light stays on. It keeps throwing P0011 bank one cam positioning sensor. Now I have replaced this sensor 5 times in the last three years. I have replaced the variable valve timing cylinoid. I have been to the infiniti dealership, nissan dealership, private owned dealership, and finally my uncle who is ASCE certified with nissan. No one can figure out why this sensor keeps failing. The car runs beautifully. no loss of power, no spit, no spudder, and fires every time. But the check engine light stays on. I can get it off for a week then it throws the same code. I keep the oil changed regularly and regular maintenance done. it has 175,700 miles on it and still going strong. The latest theories for the cause is A. loose timing chain, B. another cylinoid failing, C. the teeth on the gears of sensor need adjusting. Somebody please help!!! I have a week to figure out until my tags run out and I cannot pass emissions with light on. Thanks, Terri

[PathfinderGuyBC]

My readings in the fsm tells me that there is only 1 camshaft position sensor.

Here's the description :

The camshaft position sensor (PHASE) is located on the engine
front cover facing the camshaft sprocket. It detects the cylinder No.
signal.
The sensor consists of a permanent magnet, core and coil.
When engine is running, the gap between the sensor and the
camshaft sprocket will periodically change. Permeability near the
sensor also changes.
Due to the permeability change, the magnetic flux near the core is
changed. Therefore, the voltage signal generated in the coil is
changed.
The ECM receives the voltage signal and detects the cylinder No.
signal.


If you want to check if it is the culprit; disconnect it and measure the resistance between the 2 connectors. Here's the numbers you are looking for :

(IF IT IS AN HITACHI), resistance should be between 1440 and 1760 ohms
(IF IT IS AN MITSUBISHI), resistance should be between 2090 and 2550 ohms

these numbers are assumed for an outside temp of around 68 degrees.

S.

I unplugged the 2 camshaft sensors to measure the resistance (I too received a code of P0021 for my 2004 Pathfinder). I want to make sure I am measuring it correctly... 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 the 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.