JustAnswer > BMW
Ask A Question|Register|Login|Help
JustAnswer

BMW

Ask a BMW Question, Get an Answer ASAP!

Have your own BMW question?

19 BMW Mechanics are Online Now
characters left:
Not a BMW Question?
Bookmark and Share

Question

I hav a 97 740i . 92227 miles.It failed an emssions test with the code p0340- camshaft position sensor circuit malf.What is the part number of the replacement? please give background on the code as well.

Submitted: 456 days and 5 hours ago.
Category: BMW
Value: $20
Status: AWAITING CUSTOMER ACTION
+
Read More

Optional Information

1997 BMW 740i

Already Tried:
need to know code background, parts, and procedure

Answer

Hello, Cam sensor part # 12 141 742 185, oring part # 12 141 748 398. P0340 is a very common code. 99% of the time it is caused by a bad sensor. The code will turn on the check engine light after two drive cycles, It is compared in relation to the crankshaft sensor signal. The code will set if cam signal is missing or incorrect. Cam sensor is a hall effect switch that generates a digital signal to the DME that is used to determine camshaft position.

 

 

If this information was helpful please hit accept. Thanks, Nick

Picture
Expert: tnick
Pos. Feedback: 100.0 %
Accepts: 
Answered: 8/24/2008

ASE Certified Technician

Over 25 years of experience in automotive computer systems. ASE L1 Cerfification

+
Read More

Related BMW Questions

  • How much does a tune up cost on a 2003BMW x5?
  • factory code on computer 245, 246, 250. mech. can not trac
  • 2000 323 2.5L dohc throwing a "Ox12-(18) code (DWA interface...
  • My battery keeps dying and I already replaced the battery an...
  • High Temp Condition
  • I have a 2007 550i with sport package. The low profile run-...
  • Why do most people say you cannot repair a run flat tire?
  • The lights and chirp for my alarm just stopped working yest...



Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.
Question List | Become an Expert | Terms of Service | Security & Privacy | About Us
© 2003-2009 JustAnswer Corp.