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Ford focus 1.8TDCI car wont start its been on diagnostics got a p code p0340 which is camshaft sensor would car not start if sensor was faulty ?????

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Diagnostic codes are nothing more than a tool to to lead an experienced tech in the right direction. Just because you're getting a camshaft sensor code does not necessarily mean that, that is the problem. Of course the obvious first step would be to test the camshaft position sensor and you will probably need to take it to a shop to have those tests completed

Posted on Jul 30, 2013

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Posted on Jan 02, 2017

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SOURCE: I got a camshaft position sensor malfunction code P0340.

it sounds like you have bigger problems if your car does not crank(turn over) then your timing belt could have broken and the one piston could be hitting a valve causing it to be locked up.normally when any sensor is bad car engine still cranks it just doesn't start.

Posted on Jan 28, 2010

davesmith_37
  • 94 Answers

SOURCE: P0340 Code Camshaft Position Sensor


The Camshaft Position (CMP) Sensor detects the position of the camshaft in order to identifiy when piston No. 1 is on its compression stroke. The CMP sensor is used for ignition timing in the Ford DIS igntion system, but not in the EDIS igntion system. Both DIS/EDIS use the CMP signal for synchronizing the firing of sequential fuel injectors.

On the 3.0L vulcan engine, the CMP signal is generated by a single Hall-Effect magnetic switch, activated by a single "vane" spinning around by virture of a synchronized shaft which is driven by the camshaft. 

The CMP sensor & synchronizer/shaft are located behind the intake manifold (i.e., back near the firewall on a Ranger) on the top of the cylinder block. If you just need to replace the sensor, it is a simple job of unplugging the electrical connector and removing the screws holding the sensor in place. Here is a sketch of the sensor to give you an idea what to look for:

Posted on Feb 27, 2009

j_del
  • 1586 Answers

SOURCE: Position sensors

It's possible that the sensor needs to be rotated. The sensor is keyed so it can only be installed in one position. The camshafts spin once for every two revolutions of the crank, so it's possible that the sensor is 360 degrees out of phase (I've had this happen on timing belt jobs on other cars - with the sensor out of phase, the car would start, and then trail off and die within a few seconds). What you can try is to carefully remove the sensor, turn it over to see the part that mates to the cam, rotate it one full revolution, and then put it back on. Try that out and see if it helps. If it does the trick, great. If not, post back up and we can try to go from there.

Posted on Sep 28, 2008

  • 15 Answers

SOURCE: 2002 pt cruiser Camshaft Sensor

change the crankshaft positon sensor in the rear of the engine above the oilfilter. Also check the wiring to this sensor, they have a problem shorting out. You have to change the camshaft and crankshaft sensors at the same time. Make sure you give your car a major tune up. Did you check yor starter?.........runjoe

Posted on Mar 04, 2009

  • 280 Answers

SOURCE: code reads P0340 Camshaft position Sensor circuit

That makes the computor think the timing is off. Replace the sensor and see if that does it. You will then have to have the code cleared (erased) or the light will come back on/stay on.

Posted on Mar 19, 2010

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2 Answers

I have a nissan murano 2005 with the code p1701 and a p0340 how can i use them to repair these codes


Nissan Murano P0340 2005 Nissan Murano - Camshaft Position Sensor Circuit
Possible causes- Faulty Camshaft Position Sensor-
Camshaft Position Sensor harness is open or shorted- Camshaft Position Sensor circuit poor electrical connection- Faulty starter motor- Starting system circuit-
Dead (Weak) battery
P1701- Fuel trim

I would suggest replacing the camshaft position sensor. When the sensor fails it can cause changes in fuel system that the computer can detect. So I suspect once the camshaft sensor ivreplaced that the P1701 code will be gone.
Cam Position Sensor Replacement Nissan Murano 3 5L

Sep 20, 2015 | Nissan Cars & Trucks

2 Answers

Code p0340


P0340 Hyundai - Camshaft Position Sensor 'A' Circuit Malfunction Bank 1 Or Single Sensor Possible causes
- Faulty Camshaft Position Sensor
- Camshaft Position Sensor harness is open or shorted
- Camshaft Position Sensor circuit poor electrical connection
- Faulty starter motor
- Starting system circuit
- Dead (Weak) battery

Read more: http://engine-codes.com/p0340_hyundai.html#ixzz338zFujgZ

May 29, 2014 | 2001 Hyundai Santa Fe

1 Answer

P0340 on a ford focus 2003?


This is a Code for the Camshaft sensor circuit. It can be the camshaft sensor, the wiring loom, or the PCM it reports to.

A lot depends on if the car runs at all. The wiring loom and the camshaft sensor can be checked for continuity with an Ohmmeter. The PCM is an expensive part and is delicate. Testing is more involved.

Hopefully the first few things you look at will reveal the defect.

Feb 23, 2013 | 2003 Ford Focus

1 Answer

I changed out the MAP sensor,and the idle air sensor on my 2006 Ford Taurus. This was before I had the fault code read at a dealer. Code came back as P0340, and P0430 Band 2 cat worn out. I had the cam...


P0340 FORD - Camshaft Position Sensor Circuit Bank 1 Sensor 1Possible causes- Faulty Camshaft Position Sensor
- Camshaft Position Sensor harness is open or shorted
- Camshaft Position Sensor circuit poor electrical connection
- Faulty starter motor
- Starting system circuit
- Dead (Weak) battery
P0340 FORD Description The Camshaft Position Sensor is an electronic device used in an engine to record the rate at which the camshaft is spinning. This information is used by the Engine Control Module(ECM) to control ignition and fuel injection. The camshaft position sensor senses the retraction of camshaft (intake) to identify a particular cylinder. The camshaft position sensor senses the piston position. The sensor system consists of a rotating part, typically a disc, as well as a static part, the actual sensor.

When the engine is running, the high and low parts of the teeth cause the gap with the sensor to change. The changing gap causes the magnetic field near the sensor to change. The change in the magnetic field cause the voltage from the sensor to change.

When the crankshaft position sensor (POS) system becomes inoperative, the camshaft position sensor provides various controls of engine parts instead, utilizing timing of cylinder identification signals.
P0430, main catalyst is worn out.

Dec 04, 2012 | 2006 Ford Taurus

1 Answer

P0340 99 jeep cherokee code


P0340 JEEP - Camshaft Position Sensor Circuit engine cylinder Bank 1 Sensor 1

Possible causes- Camshaft Position Sensor harness is open or shorted
- Camshaft Position Sensor circuit poor electrical connection
- Faulty Camshaft Position Sensor
- Faulty starter motor
- Starting system circuit
- Dead (Weak) battery

Sometimes and in some models, low battery voltage or a weak starter can can trigger a Camshaft Position Sensor code.

Read more: http://engine-codes.com/p0340_jeep.html#ixzz25iQflrEb

Sep 06, 2012 | 1999 Jeep Grand Cherokee

1 Answer

I have 2000 ford focus im working on and I had code po340. so I replaced the cam and crank sensor. It still pops threw the air intake and dies when put in gear. Timming belt is newer and still in time


A 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

With 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

Sep 05, 2011 | 2000 Ford Focus

2 Answers

Can u tell me what the problem of this code PO340


I have a 1999 BMW 740 il My SES light came on so I hooked up my OBD code reader p0340 - Camshaft Position Sensor Circuit Malfunction is what came up. so I went to the BMW parts department and bought the Camshaft Position Sensor.
I Replaced the with the new. My SES light was still on so I hooked up the OBD reader again hoping it may reset my SES light but it didn't what did happen is the OBD reader came up with the same code (p0340 - Camshaft Position Sensor Circuit Malfunction) witch is what I just replaced. now I'm at a loss. I'm not sure how to reset my SES light and if I just replaced the Camshaft Position Sensor why dose it the OBD code p0340 still come up. Any suggestions?

Mar 18, 2011 | 1996 Nissan Altima

1 Answer

I got a camshaft position sensor malfunction code P0340 from my code reader and needs to know how to repair the problem for a 2000 Ford Focus SE. My car will not crank.


it sounds like you have bigger problems if your car does not crank(turn over) then your timing belt could have broken and the one piston could be hitting a valve causing it to be locked up.normally when any sensor is bad car engine still cranks it just doesn't start.

Jan 28, 2010 | 2000 Ford Focus

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