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General E46 Forum
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Old 04-15-2013, 03:29 PM   #1
harrykman90
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Join Date: Apr 2013
Location: Middleton
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My Ride: BMW E46 1999 323i
Intake Camshaft Sensor Probs

I replaced my intake camshaft sensor last week along with the ccv vent hose system. I am still getting the same error code P0340
-
"Camshaft position sensor (CMP) 'intake' circuit-bank 1"
"Open or short circuit condition"
"Probable cause--- 1. Poor electrical connection 2. Faulty CMP sensor 3. Engine mechanical condition"

That is what it says on the piece of paper Auto Zone gave me. On thing to add the plastic connection piece that the intake camshaft sensor wire side plugs into is loose in my vehicle. I can move the whole thing up and down a little. Does that mean it has a poor connector? Would reseting the code then unplugging the battery do anything? I have already reset my fault codes a couple times since I changed the sensor. With my old sensor I wasn't even getting a check engine light but I would get the symptoms of a bad sensor.
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Old 04-15-2013, 03:53 PM   #2
jdstrickland
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Location: Murrieta, CA
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My Ride: '94 325iC & '00 323i
You installed a faulty sensor.

If you were not getting a check engine light with the old sensor, my guess is the old sensor still works. I know it's a pain, but put the original sensor back in and see if the code does not return when cleared.
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Old 04-15-2013, 05:27 PM   #3
eXcelz
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Did you use an aftermarket sensor or OEM? I replaced mine recently and before purchasing a sensor, a lot of posts on this forum advise to use OEM only. Also my CEL stayed on for about a week or two before it went away.
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Old 04-15-2013, 06:35 PM   #4
harrykman90
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I still have my old sensor somewhere in the trash barrel lol...I did notice on the new sensor they plastic piece near the end that goes under the Vanos silenoid is a thicker plastic all the way through. I bought this sensor from a bmw dealer so aren't those OEM parts?!
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Old 04-15-2013, 07:04 PM   #5
scarede46er
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Did you clear the code after replacement?
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Old 04-15-2013, 08:31 PM   #6
harrykman90
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18 Pulse generator, camshaft 1 04/2004 12141438081 ENDED, See MH 9790718
18 Pulse generator, camshaft 1 12147539165 $116.05 See MH 9790718
http://www.realoem.com/bmw/showparts...70&hg=11&fg=15
On real OEM site.. I'm assuming the right sensor to get would be the top one but that is now discontinued.
And yes I've cleared the code a couple times so far.. I get one start-up and then after I shut the engine off the check engine light turns on again. My old sensor wouldn't give me a check engine light but was reading the fault code. But I was receiving some of the same symptoms...if anything my car is worse now than it was last week.
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