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I put a new 3.0 letter in my 1999 mazda and it keeps throwing the cam shaft sensor code PO340. I replaced the sensor but it keeps throwing the code? The truck drive ok but has hesitation on acceleration any suggestions ?

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  • Contributor
  • 61 Answers

Fuse or bad/ corroded wire/connectors.

Posted on Aug 04, 2013

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Posted on Jan 02, 2017

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SOURCE: truck stalls

What are the trouble codes? Recently had 0171 and 0174 codes. Engine coughed (or sneezed) upon a start one morning producing this problem resulting in very rough idle and stalling within 2 min of idling. Problem was vacuum hose blown off fuel regulator which is near impossible to reach without removing intake maniforld since the regulator is located between engine and firewall on 5.4l.

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Posted on Sep 03, 2008

keithheavili
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SOURCE: error code po340 for a 2002 hyundai elantra

Here is what I could find on your P0340 error code:
CausesA code P0340 could mean one or more of the following has happened:

  • a wire or connector in the circuit could be grounded/shorted/broken
  • the camshaft position sensor may have failed
  • the PCM may have failed
  • there exists an open circuit
  • the crankshaft position sensor may have failed
Possible SolutionsWith a P0340 OBD-II trouble code, diagnosis can be tricky at times. Here are some things to try:
  • Visually inspect all the wiring and connectors in the circuit
  • Check for continuity in the circuit wiring
  • Check the operation (voltage) of the camshaft position sensor
  • Replace the camshaft position sensor as required
  • Check the crankshaft position circuit as well
  • Replace circuit wiring and/or connectors as required
  • Diagnose/replace the PCM as required
Sounds like since you have replaced both the camshaft and crank shaft sensors you need to look at the PCM.  Go down the line of possible solutions and don't replace the PCM unless nothing else works obviously.  I hope this helps but it looks like you are looking at getting a new PCM.  Good luck.  Thanks for rating my response and for using FixYa!

Posted on May 27, 2009

  • 202 Answers

SOURCE: 1999 chrysler 300m shaft cam sensor is bad.

did you check the ASD relay,located under the hood in the fuse and relay box. hope this can help.

Posted on May 14, 2010

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P0340 - Cam Timing

SYMPTOMS/CONDITIONS
of a mistimed camshaft system (all must apply):
  1. Camshafts have previously been removed from the engine.
  2. Engine runs rough.
  3. Vehicle sets P0340 (camshaft sensor code).
  4. Camshaft sensor has been checked with a known, properly operating camshaft sensor.

CORRECT:
The diagram in the manuals should show the timing marks on both cam gears to be on the blue timing chain links.

ghost45_11.jpg

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Code po340 says camshaft position sensor circuit malfunction


replace the cam shaft positioning sensor. this is not a big job
the sensor is usually on front of block above the crankshaft pulley wheel
to change involves disconecting wire from sensor. remove bolt remove sensor,intall new sensor, replace bolt.re connect wire

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My Nissan micro 2004 model just stopped in the middle of the road one day then the engine management light came on, anyway took it to my local garage TWK Thomas who said it was a cam shaft sensor problem. OK so sensor was put on, engine management light went off for two days only. So went back to the garage they said that another sensor should be fitted on the opposite side. And then the problem should be rectified, but i had given the £160 for this problem to be fixed the first time. I decided it was time to take it to another garage Nis Tec they put it on the computer and a code po340 came up would this mean another sensor or the cam chain has stretched please help. ...claire

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1 Answer

Error code po340 for a 2002 hyundai elantra


Here is what I could find on your P0340 error code:
CausesA code P0340 could mean one or more of the following has happened:
  • a wire or connector in the circuit could be grounded/shorted/broken
  • the camshaft position sensor may have failed
  • the PCM may have failed
  • there exists an open circuit
  • the crankshaft position sensor may have failed
Possible SolutionsWith a P0340 OBD-II trouble code, diagnosis can be tricky at times. Here are some things to try:
  • Visually inspect all the wiring and connectors in the circuit
  • Check for continuity in the circuit wiring
  • Check the operation (voltage) of the camshaft position sensor
  • Replace the camshaft position sensor as required
  • Check the crankshaft position circuit as well
  • Replace circuit wiring and/or connectors as required
  • Diagnose/replace the PCM as required
Sounds like since you have replaced both the camshaft and crank shaft sensors you need to look at the PCM.  Go down the line of possible solutions and don't replace the PCM unless nothing else works obviously.  I hope this helps but it looks like you are looking at getting a new PCM.  Good luck.  Thanks for rating my response and for using FixYa!

May 27, 2009 | Hyundai Motor 2002 Elantra

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