P0340 camshaft position sensor A circuit malfunction - Ranger-Forums - The Ultimate Ford Ranger Resource


General Technical & Electrical General technical and electrical discussion for the Ford Ranger that does not fit in any other sub-forum.

Reply
 
LinkBack Thread Tools Search this Thread
  #1  
Old 01-02-2006
Member
Thread Starter
 
Join Date: Jan 2006
Location: Noblesville, Indiana
Posts: 7
P0340 camshaft position sensor A circuit malfunction

I have this code on my 1997 Ranger 3.0 V6 engine. 1st: It is a camshaft position sensor A circuit malfunction-could be a short?!?!?
2nd: Where is this located? I cannot find it in my Chilton manual!!! I must be stupid but I cannot find it! Anyway, what can I check for since it is a circuit malfunction or should I just get the sensor changed? I heard this is one of the more difficult services to perform but I also hear this is basically the new version of the distributor!?!?!? Any help would be greatly appreciated.
This sight rocks!!!!! Thanks!
Reply With Quote
  #2  
Old 01-02-2006
V8 Level II's Avatar
RF Veteran
iTrader: (4)
 
Join Date: Nov 2004
Location: Michigan
Posts: 7,831
The CMP sensor itself is a small Hall Effect sensor and mounts on top of a housing with a right angle drive off of the camshaft where the distributor used to be on earlier versions of your engine. The housing assembly is called a Synchronizer and a special tool is required to time it to the camshaft. BUT if the Synchronizer is not disturbed while changing the CMP, it will probably not need to to be retimed.

It could just be an open or short, so you should inspect the wiring first. There is not much to look at though since 2 of the CMP wires go directly to the PCM without any intermediate plug connectors and the third wire goes to chassis ground.
Reply With Quote
  #3  
Old 03-19-2007
Member
 
Join Date: Mar 2007
Location: Sacramento
Posts: 1
What is a CMP? I have this same code and am wondering what to do about it.
Reply With Quote
  #4  
Old 03-19-2007
FXFrank's Avatar
Member
 
Join Date: Dec 2006
Location: Midwest
Posts: 104
I would definately get this fixed guys. if this goes out, this "synchronizer" actually drives your oil pump. you will want to replace the sensor and the synchronizer. Be prepared to spend 150 - 200 for the parts.
Reply With Quote
  #5  
Old 03-19-2007
n3elz's Avatar
RF Veteran
 
Join Date: Jun 2004
Location: Kennett Square, PA
Posts: 10,620
CMP = Cam Position Sensor
CKP = Crank Position Sensor

They use magnetic sensors to detect the position of the crank and cam to properly time ignition primarily.

They're pretty important, and best not to be ignored.
Reply With Quote
  #6  
Old 03-19-2007
n3elz's Avatar
RF Veteran
 
Join Date: Jun 2004
Location: Kennett Square, PA
Posts: 10,620
Quote:
Originally Posted by FXFrank
I would definately get this fixed guys. if this goes out, this "synchronizer" actually drives your oil pump. you will want to replace the sensor and the synchronizer. Be prepared to spend 150 - 200 for the parts.
The sensor isn't part of the oil pump drive, but the mechanical assembly it's part of is. If it's just the sensor itself (most likely), then your lubrication isn't in danger.
Reply With Quote
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Camshaft Position Sensor - P0340 computerflake 2.9L & 3.0L V6 Tech 12 05-08-2013 10:51 AM
camshaft position sensor circuit malfunction Aiden123 2.9L & 3.0L V6 Tech 13 08-28-2009 09:28 PM
CAMSHAFT POSITION SENSOR...new twist plaese help JOHN PERRETTE 4.0L OHV & SOHC V6 Tech 6 06-25-2008 04:09 PM
Camshaft Position Sensor gr8shot SOHC - 2.3L & 2.5L Lima Engines 1 06-17-2008 04:44 PM
Camshaft Position Sensor monkey-1 SOHC - 2.3L & 2.5L Lima Engines 0 08-02-2005 01:29 PM


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -6. The time now is 01:14 PM.


We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.