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post #1 of 3 (permalink) Old 09-15-2014, 12:21 PM Thread Starter
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P0344 code

Wondering if anyone else has had this issue. I have replaced the camshaft position sensor 3 times. 2 with advanced auto sensors. Thought maybe just faulty sensors. Went to Jeep and installed a oem. I can not get this code to clear and the truck is stalling at random times. Mostly when taking off from a stop. This recently started after getting struck on the rear at qtr panel, when we got truck from shop it started it about a week later. It has thrown other codes as well but they have cleared.

Anyone have any suggestions?
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post #2 of 3 (permalink) Old 09-15-2014, 01:23 PM
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What year and trim, engine and how many miles on it?

This is what I found for code P0344

P0344 Jeep

P0344 Jeep - Camshaft Position Sensor Intermittent Interruption Bank 1 Sensor 1

Possible causes
- Faulty Camshaft Position Sensor
- Camshaft Position Sensor harness is open or shorted
- Camshaft Position Sensor circuit poor electrical connection
- Faulty starter motor
- Starting system circuit
- Dead (Weak) battery



Tech notes
Sometimes and in some models, low battery voltage or a weak starter can can trigger a Camshaft Position Sensor code.


When is the code detected?
The camshaft position sensor signal sent to the Engine Control Module(ECM) is intermittent
Possible symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
- Lack/Loss of Power
- Engine Stall

P0344 Jeep Description

The Camshaft Position Sensor is an electronic device used in an engine to record the rate at which the camshaft is spinning. This information is used by the Engine Control Module(ECM) to control ignition and fuel injection. The camshaft position sensor senses the retraction of camshaft (intake) to identify a particular cylinder. The camshaft position sensor senses the piston position. The sensor system consists of a rotating part, typically a disc, as well as a static part, the actual sensor.
When the engine is running, the high and low parts of the teeth cause the gap with the sensor to change. The changing gap causes the magnetic field near the sensor to change. The change in the magnetic field cause the voltage from the sensor to change. When the crankshaft position sensor (POS) system becomes inoperative, the camshaft position sensor provides various controls of engine parts instead, utilizing timing of cylinder identification signals.

Read more: http://engine-codes.com/p0344_jeep.html#ixzz3DPB9QP90


Visit the site, there are links for TSB's about this stating there is a PCM update that eliminates this erronously lighting a CEL.
__________________________________________________ _____________

This is NOT a code for a Cam/Crank position mismatch/out of sync. i.e. its NOT telling you it sensed the cam out of position. Often times folks assume something must be wrong with the sensor while ignoring exactly what it is telling them, that something went wrong in the engine, like the timing belt skipped a tooth or the chain tensioner failed and cam timing is now off, and it often turns out it is exactly what the code describes.

In this case its telling you the signal is intermittent from the sensor. It has NOT sensed the cam being out of position, but the signal stops sometimes. So it could be for the above reasons, or like the TSB says, as the PCM goes through its own diagnosis, it incorrectly sets that code and an update to the PCM software fixes that, or it could be an intermittent short in the wire harness.

Unless you've been replacing the wrong Camshaft sensor (if there is more than one, I think there is only one all three engine options, but could be wrong for the 3.7L and 4.7L).
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post #3 of 3 (permalink) Old 09-15-2014, 01:33 PM Thread Starter
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I apologize. It's a 06 limited 5.7 with about 115,000.
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