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Camshaft Sensor Replacement
 
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Pelican Technical Article:

Camshaft Sensor Replacement

Nick Czerula

Time:

3 hours3 hrs

Tab:

$200

Talent:

**

Tools:

Set of sockets 5mm Allen bit, wrenches 19mm, 32mm, flathead screwdriver

Applicable Models:

BMW 323Ci Coupe/Conv (1999-00)
BMW 323i Sedan/Wagon (1999-00)
BMW 325Ci Coupe/Conv (2001-06)
BMW 325i/xi Sedan/Wagon (2001-06)

Parts Required:

Intake or Exhaust camshaft sensor, sealing o-rings

Hot Tip:

Work with a cool engine

Performance Gain:

Car will run well.

Complementary Modification:

Replace your camshaft

The digital motor electronics (DME) engine management systems in BMW E46 vehicles use the engine control module (ECM) to control fuel injection, ignition and other important drivetrain functions. The ECM sequentially triggers the fuel injectors to spray fuel into the intake ports and then, a split-second later, triggers the ignition coils to fire the spark plugs. This sequence of events is timed by using crankshaft position information. Using the signal from the crankshaft sensor, the ECM "knows" which cylinder is ready for fuel intake and then, later, for ignition. 

However, in addition to the crankshaft position signal, the ECM needs a signal to distinguish the crankshaft valve-overlap top-dead-center (TDC) position from the TDC just prior to the power stroke. This signal is provided by camshaft position sensors, which help synchronize fuel injection and ignition. In addition, camshaft sensors serve as feedback devices for VANOS (variable camshaft timing) control. 

When a camshaft sensor fails, the check engine light will illuminate and a fault code will be stored. I have seen faulty sensors cause engine stalling and poor engine drivability. If you have a camshaft sensor fault code and your engine isn't running right, I suggest replacing the sensor before digging too deep. 

In this article, I will go over the steps involved with replacing the intake and exhaust camshaft position sensors. The procedures are different, so they will be described separately. BMW suggests replacing the sensor fasteners when removing. This is due to Loctite used at the factory. If you do not want to replace the fasteners, be sure to apply a small amount of blue Loctite on the fastener threads.

Keep in mind that when your car was serviced before, parts may have been replaced with different size fasteners used in the replacement. The sizes of the nuts and bolts we give may be different from what you have, so be prepared with different size sockets and wrenches. 

Protect your eyes, hands and body from fluids, dust and debris while working on your vehicle. If you are working with the electrical system, disconnect the battery before beginning. Always catch fluids in appropriate containers and properly dispose of any fluid waste. Recycle parts, packaging and fluids when possible. Do not work on your vehicle if you feel the task is beyond your ability. 

Vehicle models change and evolve, as they grow older, so the vehicle shown in our illustrations may vary slightly from yours. If something seems different, let us know and share your info to help other users. Do you have questions or want to add to the article? Leave a comment below. When leaving a comment, please leave your vehicle information.

Remove the engine covers. See our Pelican Parts technical article on Removing Your E46 Engine Covers.

Intake camshaft sensor

Remove the air filter housing assembly fasteners (yellow arrows) and disconnect the air flow meter electrical connector (green arrow).
Figure 1

Remove the air filter housing assembly fasteners (yellow arrows) and disconnect the air flow meter electrical connector (green arrow).

Loosen the air flow meter clamp (green arrow), then disconnect the duct from the air flow meter and remove the air filter housing from the engine compartment.
Figure 2

Loosen the air flow meter clamp (green arrow), then disconnect the duct from the air flow meter and remove the air filter housing from the engine compartment.

Working at the left front corner of the cylinder head cover, disconnect the crankcase vent hose by squeezing the release tabs and pulling it away from the cylinder head cover.
Figure 3

Working at the left front corner of the cylinder head cover, disconnect the crankcase vent hose by squeezing the release tabs and pulling it away from the cylinder head cover.

Disconnect the VANOS solenoid electrical connector (green arrow).
Figure 4

Disconnect the VANOS solenoid electrical connector (green arrow). Squeeze the metal release clip and pull off the solenoid.

Then, using a 32mm wrench, loosen the VANOS solenoid.
Figure 5

Then, using a 32mm wrench, loosen the VANOS solenoid. If the VANOS oil line prevents access to the VANOS solenoid hex, you'll have to remove the oil line 19mm Banjo bolt. This will improve access to the VANOS solenoid. Be prepared to catch any dripping oil with a rag.

Now, you can remove the VANOS solenoid from the cylinder head, be sure to catch any dripping oil with a rag.
Figure 6

Now, you can remove the VANOS solenoid from the cylinder head, be sure to catch any dripping oil with a rag.

Next, remove the intake camshaft sensor using a 5mm Allen bit fastener (green arrow).
Figure 7

Next, remove the intake camshaft sensor using a 5mm Allen bit fastener (green arrow).

The camshaft sensor electrical connector is located below the throttle and behind the alternator.
Figure 8

The camshaft sensor electrical connector is located below the throttle and behind the alternator.


Disconnect the camshaft sensor electrical connector. Remove the BMW E46 camshaft sensor from your cylinder head, catch dripping oil with a rag. Next you'll need to feed the sensor wiring harness up and out of your engine compartment.

Feed the new sensor wiring harness into engine compartment the same way it was previously routed. Install the sensor in the cylinder head and torque the fastener to factory specs. Connect the camshaft sensor electrical connector. Reinstall the VANOS solenoid and torque to specs. Install the air filter housing and your engine covers and then clear the DME of any fault codes.

Exhaust camshaft sensor
The BMW E46 camshaft sensor is located at the right front of your cylinder head - disconnect the camshaft sensor electrical connector (green arrow).
Figure 9

The BMW E46 camshaft sensor is located at the right front of your cylinder head - disconnect the camshaft sensor electrical connector (green arrow).

Using a 5mm Allen bit, remove the E46 exhaust camshaft sensor fastener (green arrow).
Figure 10

Using a 5mm Allen bit, remove the E46 exhaust camshaft sensor fastener (green arrow).

Now you can pull the camshaft sensor out of your cylinder head, catch any dripping oil with a rag.
Figure 11

Now you can pull the camshaft sensor out of your cylinder head, catch any dripping oil with a rag.


Install the new exhaust camshaft sensor with new o-ring and the fastener. When installing, lubricate the o-ring with engine oil and push it into the cylinder head until the retaining flange (where the bolt fastens through) is flush with the cylinder head. Install the new fastener and torque to factory specs and reconnect the electrical connector

.
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Comments and Suggestions:
justacarguy Comments: I unfloodeded the engine and got it to start. as it sits now, it takes forever to start turning the key. when it does start, the idle is rough as hell and it wants to Die. If I nurse it past this point, it has decent power and acceleration, but the engine revs are nowhere near what is normal, and when I turn the key off it requires a 10 minute wait before the engine will start again, after a long wait of holding the starter motor in working order. when at idle it is still rough as hell and It's no where near normal, despite the fact that I got It running again.
December 3, 2016
justacarguy Comments: 01 330i, car was throwing a code for crankshaft position sensor, changed that, no improvement, hard start, rough idle, stalling at idle. changed exhaust camshaft position sensor, now car will not start, cranks and sounds like it wants to start but nothing, can smell fuel out of exhaust. It almost sounds like a timing issue. no Idea where to go next
November 18, 2016
  Followup from the Pelican Staff: If you suspect timing, check engine compression. If too low, cam timing is retarded, if too high it is advanced. - Nick at Pelican Parts  
BELLA Comments: Hi, question my 2002 325i e46 keeps giving me p1349 and p1347 codes. I checked spark plugs and coils and have reset codes but they keep coming back. Is it h02 sensor that is out or a vaccum leak? Im Stuck!
November 16, 2016
  Followup from the Pelican Staff: These are codes for an engine misfire. I would check spark, fuel and compression on all cylinders. - Nick at Pelican Parts  
Allblackedout97 Comments: I have an 02 325i and its getting cold out on first start it is rough idle and trips the service engine soon light if i let it warm up turn it off then start up it runs fine. Also if i start up for the first time but hold it at 1500 rpm on warm up it will not throw a code. What could this be?
October 25, 2016
  Followup from the Pelican Staff: If the service engine soon light is ON, a fault is stored. Your scan tool may not be able to display it. Try to scan it with a different tool. The code will point you toward the problem. - Nick at Pelican Parts  
Jf Comments: How to disconnect harness from capmshaft censor on BMW 2002 325X1
October 7, 2016
  Followup from the Pelican Staff: Exhaust sensor has plastic tab you press when pulling off. Intake had a wire release you press while pulling off. - Nick at Pelican Parts  
Mick Comments: I have an E46 2001 325Ci Convertible.
I am getting a cam sensor B side P code.
Which is this Exhaust side or intake?
Or should I just change them both?
September 8, 2016
  Followup from the Pelican Staff: Sensor locations are listed in this article:

http://www.pelicanparts.com/BMW/techarticles/BMW-3-Series-E46/19-FUEL-Camshaft_Sensor_Replacement/19-FUEL-Camshaft_Sensor_Replacement.htm - Nick at Pelican Parts
 
ploughna Comments: My car is a 2001 E46 330ci. The engine light was not on, but low RPM power seemed very poor so I scanned for codes and have P0344 "A" circuit camshaft sensor and P1348 misfire. Could these be related, or two separate issues? Should I replace the camshaft sensor first and see what happens? I looked at the Pelican article for testing but my simple scanner doesn't have the option to show live Vanos data - what tool do I need for this?
Thanks for any help
Paul
September 7, 2016
  Followup from the Pelican Staff: Start with the camshaft sensor. If the light was not on, either one of the codes would be older. However, the cam sensor is common and can cause running issues.

A tool to read live data would have to be advanced, such as an Autologic. When considering a scan tool, check with the manufacturer to see if they support data stream and bi-directional control.s - Nick at Pelican Parts
 
Phil Comments: Having a problem with my 01 325i . Driving and idle car runs perfect until I hit 5k rpm the car starts to bogg or like a miss fire but throws no code. I just did all the plugs again and did all new coils last year . Read through couple forums some say could be camshaft position sensor or it could be feel pump. Also idk if this changes anything but I replaced all 4 wheel sensors last week and instead of getting rid of the brake/abs light it actually holds brake light illuminated red an got a code for that. Idk if that's a cause ?
August 8, 2016
  Followup from the Pelican Staff: You'll need to see what fault is turning he brake light on. Probably not related.

Is the check engine light on or flashing when the problem is present? Sounds like an engine misfire. I would check spark, fuel and compression on all cylinders. - Nick at Pelican Parts
 
Mike Comments: Hi I have BMW 750i 2007 vin. DT08103 I have to replace 4 Camshaft sensors and 1 Crankshaft sensor.
Please can you tell me the Location of this sensors.
Cheers, Mike
July 31, 2016
  Followup from the Pelican Staff: Crank sensor is in the transmission bell housing on the right side bottom and the camshaft sensors are in the valve covers.
We don't currently have that tech article. If we get a chance to perform the procedure, we will be sure to document it.

I would grab a repair manual. It will have the procedure, special tools and torque specs.

Give our parts specialists a call at 1-888-280-7799.- Nick at Pelican Parts
 
Jason Comments: With this be the proper part number 12147518628 ? It is a 2002 325xi
July 12, 2016
  Followup from the Pelican Staff: That sensor does show up for an E46. You may have it crooked when installing. - Nick at Pelican Parts  
Jason Comments: That is exactly what it feels like. Like an O ring but the old green o ring from the original sensor came out with it. Could there have been two tings from the old sensor since it is shaped differently? Any advice on how to get it out? Thank you
July 12, 2016
  Followup from the Pelican Staff: No, only one. First compare the old and new sensors to be sure it is the right size.

Try lubricating the O-ring with clean engine oil. Then be sure you are not going in at an angle. - Nick at Pelican Parts
 
Jason Comments: I have a 2002 e46. The new exhaust camshaft sensor does not seem to fit where the old one was. It feels like there is some sort of lip inside the cylinder head preventing the new thicker full sensor from fitting in? Is there some secret that I do not know about?
July 12, 2016
  Followup from the Pelican Staff: The old sealing O-ring may be in the head still. - Nick at Pelican Parts  
mygirlandboy Comments: Could a Bad camshaft sensor cause a lean condition
June 18, 2016
  Followup from the Pelican Staff: No, it would not. - Nick at Pelican Parts  
Chris H Comments: Hey guys. I have a 200 bmw 323i sedan and my check engine light intermittently comes on. I see the fault code is the east camshaft position sensor is the code, but my car is running perfectly. The check engine light comes on, and then off. It's weird. What could be the problem?
May 31, 2016
  Followup from the Pelican Staff: I would assume the sensor is failing intermittently. Give The Pelican Parts parts specialists a call at 1-888-280-7799. They can figure out what part or repair kit you need.
- Nick at Pelican Parts
 
Nitty Comments: Thank you guys for doing what you do! 2001BMW 325I p0365 & p0172, any clues? Just learning that with sound advise it is cheaper to do it yourself. Thank you.
April 17, 2016
  Followup from the Pelican Staff: The P0365 is for exhaust cam sensor and the other is a fuel trim fault. I would check the function of the sensor, then check fuel trim to see when it is skewed, (could be a maf sensor or an air leak). - Nick at Pelican Parts  
Niek Comments: Hi, I have a 2003 BMW 316ti compact. I started my car and suddenly the engine was running really bad. I shutdown my car and now it won't start anymore. It's giving me an p0366 error code, is this a problem with my camshaft exhaust sensor?
April 4, 2016
  Followup from the Pelican Staff: Yes, that code and symptom does point to the exhaust sensor. Give our parts specialists a call at 1-888-280-7799. They can figure out what part or repair kit you need.
- Nick at Pelican Parts
 
Mike1 Comments: When I disconnect the Vanos exhaust solenoid, my car runs good. When I install the connector, my engine misfires in idle.
March 11, 2016
  Followup from the Pelican Staff: That's not a good test. You are forcing the engine to run in a default mode.

If you have an engine misfire and no other codes, I would check spark, fuel and compression on all cylinders.
- Nick at Pelican Parts
 
Paul2000 Comments: I have a 2000 BMW 323ci E46 it is giving me fault codes for can sensor on bank 1 I know that it is the intake but I am also getting fault codes for random multiply miss fire on cylinders 153 and a fault code p1250 and I have no idea what that code is any help would bebgreat.
February 17, 2016
  Followup from the Pelican Staff: Start with repairing the camshaft sensor fault. If the misfire fault is still present after the repair, I would check spark, fuel and compression on all cylinders. - Nick at Pelican Parts  
James Comments: Tricky one for ya. Maybe you've seen it before. I have a P1397 on my 2000 328i. Replaced the sensor and the code is still there. I have the correct voltages and continuity to ground at the plug. I just finished a complete rebuild of the engine but I used the factory bmw timing tools so I highly doubt the timing is off and it runs way too well. It throws the light as soon as the car starts. It acts like the sensor isn't even plugged in because when I unplug it the car throws the light at the same time. I feel like its an electrical issue but how can this be with all the correct voltages at the plug? Any tips are greatly appreciated.
February 11, 2016
  Followup from the Pelican Staff: To start, confirm the DME has the same voltage readings as the sensor, and the sensor signal is present. This could be a wiring issue or a faulty DME. Evident by the immediate fault code. - Nick at Pelican Parts  
Kevin B Comments: Do i need the BMW specific OBD scanner to get the p0340 code or will the generic scanner pickup that code? Thanks
January 12, 2016
  Followup from the Pelican Staff: A generic tool will display P-codes stored in the engine control module. - Nick at Pelican Parts  
Willy Salazar Comments: Hello, when changing this sensor the fastener needs to be changed too? what's the part number for it

Thanks
December 27, 2015
  Followup from the Pelican Staff: Depends on the model. BMW suggest replacing on some models due to micro-encapsulated bolts. However, if you replace the thread locker, you can reuse the fastener. Some models require replacement dude to single use bolts. You didn't mention what vehicle you have So I can't be more specific.

Give our parts specialists a call at 1-888-280-7799. They can figure out what part or repair kit you need.- Nick at Pelican Parts
 
memcha Comments: I have a BMW 318i E46 2004 model. I did a service on the vehicle but after that when driving eml light will appear and eventually loses power even at high speed. Later i realised that when i start the car it starts and idles for a few seconds and switches off. What could be the problem?
December 25, 2015
  Followup from the Pelican Staff: Could be a faulty throttle housing. I would start by checking the DME for fault codes. If the system is not working properly, a fault code will be set. This will be your best bet when diagnosing.
- Nick at Pelican Parts
 
Tony Comments: have 2002 325 BMW with p0365 code intermittently.. the car starts and runs fine. Should i start with the exhaust sensor first?
December 15, 2015
  Followup from the Pelican Staff: Yes, that is the sensor the code refers to. - Nick at Pelican Parts  
Luie Comments: Hello I have a BMW 325i coupe and the codes that appeared are p1520, p1423, and p1523. Please help, they told me I had to replace cam shaft, when I try to crank up, the car doing doesn't go in but makes a ticking noise.
November 29, 2015
  Followup from the Pelican Staff: These are camshaft timing faults. You could have a faulty vanos actuator or jumped engine timing. I would lean toward jumped timing if not starting. When your engine doesn’t start you’ll want to check the basics. Check spark, fuel injector pulse and fuel pressure, volume, quality and engine compression. Are there any fault codes? Once you figure out what is missing, it will be easier to diagnose.
- Nick at Pelican Parts
 
Bigror Comments: I have a 2004 530i that won't start. I get a p0340 code which I believe is for intake cam sensor. I've changed the sensor twice, the second time with one from BMW. Any other ideas as to why it won't start?
November 19, 2015
  Followup from the Pelican Staff: You will need to check if the sensor signal is getting to the DME. There may be a faulty wire. - Nick at Pelican Parts  
Jose Comments: Hello, I have 2004 BMW 325ci. I have codes 0365, 0010, and 1318. I can't figure it out because I just replaced the sensors and installed a rebuilt Vanos. Car is hard to start, usually requiring 3 cranks and some gas to get it going. Could these be because of the sensors still?
November 9, 2015
  Followup from the Pelican Staff: You mechanical engine timing may be incorrect. I would double check it. - Nick at Pelican Parts  
stix Comments: Is this the correct Intake camshaft sensor for BMW 323i 1999 model, E46?
October 14, 2015
  Followup from the Pelican Staff: I can't tell without knowing the part number. - Nick at Pelican Parts  
Matt Comments: I have a 01 330ci. Have the trifecta dash lights but no engine light. Speedo + L/per hr not responsive. Only error code is P0369, have replaced the abs sensors however camshaft sensor doesn't relate to the speedometer as far as I'm aware. Thoughts?
October 8, 2015
  Followup from the Pelican Staff: can sensor will not cause a speedo issue. I would check if the cluster has any fault codes. There may be a communication problem. Does the temp gauge read hot? That is usually a good indicator of a communication issue. - Nick at Pelican Parts  
Ian.g Comments: I have a 2001 320i auto pinking loud on acceleration took it to garage for diagnostics told vanos problem. Seals have been replaced but still faint pinking noise. Is this likely to be sensors mileage 102000.
Cheers.
September 3, 2015
  Followup from the Pelican Staff: pinking? Do you mean pinging? It may be a timing issue, it would have to be advanced t ping. Check compression, if high, the timing may be off. - Nick at Pelican Parts  
dave Comments: How can I tell which camshaft sensor needs replacing, inlet or exhaust. are they both the same?
July 31, 2015
  Followup from the Pelican Staff: The fault code will define which sensor is faulty. - Nick at Pelican Parts  
Frb Comments: You seem to get a lot of posts on this I took your advice had dtc p0344 & intermittent stalling replaced cam position sensor all is good thanks.
June 25, 2015
  Followup from the Pelican Staff: Thanks for the feedback. Glad we could help.
- Nick at Pelican Parts
 
SD619 Comments: Hey so I got the p0340 code, and replaced the camshaft position sensor intake one but my car ended up acting the same after the replacement. my homie cleared the code and started the engine over and over again and the same code will appear. What can this mean? my car is not changing its gears correctly... :
April 22, 2015
  Followup from the Pelican Staff: The signal may not be getting to the DME. See this article:
http://www.pelicanparts.com/BMW/techarticles/BMW-3-Series-E46/106-FUEL-Camshaft_Sensor_Testing/106-FUEL-Camshaft_Sensor_Testing.htm - Nick at Pelican Parts
 
sd619 Comments: Alright thanks! so does this fix process work the same with a 330i ?
April 19, 2015
  Followup from the Pelican Staff: Yes. - Nick at Pelican Parts  
SD619 Comments: Hi, I have a 330i 2002 i don't know if its the intake or exhaust camshaft sensor that i need to fix, i was told that it was the camshaft sensor. is there any way to tell if its the intake or exhaust one ? My car turns on till the third time or fourth time i try turning it on, and slows down and shuts down when i go up hills. any help please
April 16, 2015
  Followup from the Pelican Staff: See this tech article:

http://www.pelicanparts.com/BMW/techarticles/BMW-3-Series-E46/106-FUEL-Camshaft_Sensor_Testing/106-FUEL-Camshaft_Sensor_Testing.htm - Nick at Pelican Parts
 
Anthony Comments: Nick, I have a '96 328i, 5 speed over 200k on it. I cel indicated p0340. It takes a second longer to crank but otherwise idles ok and drives ok - maybe a little underpowered in low rev range. Replaced the cam sensor and no change. Perplexed as cel comes on at start up. Thanks for your help.
April 13, 2015
  Followup from the Pelican Staff: The code is for the intake sensor, did you replace it? if so, check the signal to the DME:

http://www.pelicanparts.com/BMW/techarticles/BMW-3-Series-E46/106-FUEL-Camshaft_Sensor_Testing/106-FUEL-Camshaft_Sensor_Testing.htm - Nick at Pelican Parts
 
Stock for now Comments: Update: P0153, P0171, and P0174 fault codes.
February 23, 2015
  Followup from the Pelican Staff: Thanks, got it. The lean codes could be a vacuum leak. i would inspect the intake air ducts to be sure there isn't a leak causing the faults. - Nick at Pelican Parts  
Stock for now Comments: If it is the throttle motor, would I change the throttle body? Is the motor separate? New to working on BMWs. But have worked on other cars.
February 23, 2015
  Followup from the Pelican Staff: Correct, the throttle body / module / motor - all the same item. Just depends on what term you identify it with. - Nick at Pelican Parts  
Stock for now Comments: From previous post. 2005 325ci. The hesitation only starts at right around 4000.
February 22, 2015
  Followup from the Pelican Staff: Ok, thanks. - Nick at Pelican Parts  
Stock for now Comments: I am having a hesitation at wide open throttle. If I stay in it the car shows amber brake any eml lights. Idles extremely rough and doesn't respond to the throttle. If I shut it off and restart it it runs right as long as I don't go WOT again and the lights go off.
February 22, 2015
  Followup from the Pelican Staff: Sounds like an issue with the throttle motor. I would start by checking the DME for fault codes. If the system is not working properly, a fault code will be set. This will be your best bet when diagnosing.
- Nick at Pelican Parts
 
Adrianna Comments: So, yesterday I commented on issues with the Camshaft position sensor "B" circuit. The diagnostic test gave me a P1397 code. When I went back out to inspect the car, I noticed a large crack in the air intake hose. I quickly covered the crack with duct-tape as a temporary fix. To my surprise, the check engine light went away. Although the fault code was for the exhaust sensor, do you think it was really the hose? Are they interrelated in any way? Would you recommend replacing both the hose and the exhaust sensor?
February 12, 2015
  Followup from the Pelican Staff: Could be coincidence. Camshaft codes are caused by circuit or signal faults. I would replace both. - Nick at Pelican Parts  
Adrianna Comments: Hello - I have a 2000 BMW 328i. The engine light turned on. The diagnostics test gave me a P1397 code - "Camshaft position sensor "B" circuit Bank 1. Would you know whether it is the intake or the exhaust?
February 11, 2015
  Followup from the Pelican Staff: That fault code is for the exhaust sensor. - Nick at Pelican Parts  
Moedog Comments: Hey I have a 2000 bmw2000 323i cell on and code given is 1397 bank 1 which cam sensor is this and where is it located
October 5, 2014
  Followup from the Pelican Staff: This is likely the intake camshaft sensor. Located behind the oil filter housing, mounted in the cylinder head. - Nick at Pelican Parts  
E46 Comments: You're right, sorry for the "100%" thing, it's common for this sensor to work intermittently?
Thanks
August 28, 2014
  Followup from the Pelican Staff: Yes. Very common. Check that page I linked you. - Nick at Pelican Parts  
E46 Comments: Hi,i have an 325i/2003/120000 miles, yesterday the engine stall at stop sign few times and run roughly after, the only code i pull is p0344,this is 100% the camshaft intake sensor?
This morning everything looks fine it's wise to change the sensor anyway or to wait for another episode.
Thanks
August 28, 2014
  Followup from the Pelican Staff: Obviously it is a code for the camshaft sensor, I can't say if the sensor on your vehicle is in fact faulty with 100% confidence without looking at it myself. See this article on how to test the sensor: http://www.pelicanparts.com/BMW/techarticles/BMW-3-Series-E46/106-FUEL-Camshaft_Sensor_Testing/106-FUEL-Camshaft_Sensor_Testing.htm - Nick at Pelican Parts  
james Comments: Hi, how do i know if my problem is with one of the two positions of sensors. I have a p0339 code btw on a 2001 325i sedan. i dont know if i should replace the intake or exhaust sensor.
August 22, 2014
  Followup from the Pelican Staff: P0339 is a crankshaft sensor fault code. Check the signal to the DME from the crankshaft sensor. If the signal is faulty, replace the sensor. - Nick at Pelican Parts  
Tament Comments: would a camshaft sensor, intake or exhaust cause a no start of the car?
August 19, 2014
  Followup from the Pelican Staff: What year and model vehicle? It is possible. - Nick at Pelican Parts  

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