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#1 (permalink) Old 06-25-2008, 10:40 PM
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Question Exhaust camshaft sensor

I have a 2000 Z3 with the 2.3. I had a check engine light on and kept checking the gas cap--it would go out after 3 starts. Had light checked out at Autozone and it was a P1397: Camshaft Position Sensor "B" Circuit (Bank 1). I understand that this is the exhaust sensor, which is the cam sensor without the pigtail. I have been searching and understand that it is easy to change from the front of the engine. I have looked and find how to change what I think is the intake sensor. Is there a url for the exhaust sensor? Are my conclusions correct above.

I am new to this site and would appreciate any advise and help.

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#2 (permalink) Old 06-26-2008, 11:17 PM
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the exhaust sensor will be on the cylinder head in front on the exhaust side.

1) unplug and detach from the pulse generator;
2) remove retaining screw on the bottomside;
3) remove pulse generator(exhaust sensor)

It's easy if you get the replacement first... that gives u an idea of how, what, and where... ;-)

10 minute job.. EASY!
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#3 (permalink) Old 06-28-2008, 07:32 AM
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Thanks for the info.
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#4 (permalink) Old 07-09-2008, 05:00 PM
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I replaced the sensor and purchased an OBDII reader in order to clear the code. The problem is the code keeps coming back--the exact same code. Any suggestions?
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#5 (permalink) Old 08-20-2008, 12:11 PM
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I've got the same issue but I'm showing a different code. P0340 which is also showing bank 1. I've done some research and out of the half dozen people I've talked to half say bank one is the intake, the other half say the exhaust. I would suggest either replacing the other one too or just switching which one you replaced the first time.
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#6 (permalink) Old 08-20-2008, 12:40 PM
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That, or get someone with a GT1 computer to read the codes...the little code readers that you get from Bavauto or whatever are decent for getting a general idea of what could be wrong, but aren't always 100%.



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#7 (permalink) Old 08-20-2008, 05:32 PM
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I did try putting the old sensor back in but had the same result. Sent the new sensor back and received another new sensor. Problem went away. Guess it was just a defect.

Thanks for all the help.
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#8 (permalink) Old 08-21-2008, 01:22 PM
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Angry Now I have a problem

I have the exact same problem as tsoileau. I'm trying to replace the intake camshaft position sensor, the one with the pigtail and I cannot find it. I already did the exhaust. Where exactly is the Intake located.... I'm new to this site and unfamiliar with acronynms.... sorry. Any help would be appreciated greatly.

Both of my BMW's are for sale, I'm moving out of the country and need to get rid of both. I know wholesale and retail prices and I'm selling them cheap. $34k for the 07 and 14,500 obo for the 2000. Call me if your interested 302-985-7704
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#9 (permalink) Old 12-31-2008, 07:42 PM
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Same Problem

I have a 2000 323i which is experiencing the same problem (recurring code P1397). The dealer replaced the exhaust cam sensor and o-ring; however, th eproblem still exist. The code wil lremain cleared as long as the car isn't turned off. Once you restart the car, the code immediately returns? Any suggestions?
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