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Ford focus 1.8TDCI been on diagnostics got a p code p0340 engine wont start

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  • 19 Answers

This is a cam shaft sensor code

Posted on Jul 30, 2013

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6 Suggested Answers

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Posted on Jan 02, 2017

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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

  • 383 Answers

SOURCE: error code P0340

lionelloopho: P0340 is a Cylinder signal not getting to the ECM, momentarily while the engine is being cranked.
According to Nissan's diagnostic chart, the recommend checking the following: Harness connectors for the cam positioning sensor,
The sensor it self, The starter, for excessive draw.
The battery for weakness.
Nissan did have a service bulletin out on hard cranking problems.
The symptoms include difficult starting ans spark knock (very sharp rattling sound)
The bulletin reference number is: NTB95-090 You can check with Nissan because the solution warrants the replacement of the ECM.
You may have to tell a little white lie and tell them you have been living with the problem for quite a while because no one has been able to solve the problem and you have just now heard of this bulletin.
Good Luck and let me know how you make out, I'm pretty sure this is the solution.

Posted on Apr 20, 2009

localwonder
  • 6784 Answers

SOURCE: most common cause for code P0340 of 95 Ranger

Hi, the cam shaft sensor will be located Under the hood, center, upper engine area, mounted behind rear of intake manifold, in the engine block.


This is a magnetic or hall effect sensor. It sends a signal to the computer relaying information about shaft speed, position and acceleration or deceleration. This information determines when the fuel/air mixture needs to be ignited and how much mixture is needed for the engine.

The possible causes of failure will be faulty housing or faulty wires as well. A faulty ECM could trigger a false alarm as well. this is highly unlikely but, possible in most cases. The most reported reasons is flat out sensor failure.

Posted on May 21, 2009

morse008
  • 1111 Answers

SOURCE: engine trouble codes: p0016 p0340 p0344 p0456

You can look up the codes on Wiki site

Posted on Nov 04, 2009

  • 4369 Answers

SOURCE: 2004 Ford Freestar with P0340 Code. What is it

camshaft position sensor

Posted on Jan 16, 2010

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1 Answer

WHAT IS CODE P0340


Code P0340 Cam Sensor failure

Mar 16, 2016 | 2005 Ford Freestar

1 Answer

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 ?????


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

Jul 30, 2013 | Cars & Trucks

1 Answer

Error code 340 & 457


  • P0340 - Camshaft position sensor circuit malfunction.
  • P0457 - Evaporative emission control system leak detected (fuel filler cap loose/off)

    There is a bulletin #0398 posted on 05/12/2003 for P0457 - Malfunction indicator lamp (mil) illumination with diagnostic trouble codes p0442, p0455, p0456, p0457, p1442 or check fuel cap lamp illuminated with diagnostic trouble code p0457.

I'd suggest checking with your local dealer, as it may be a fix that is covered by the dealer.

Oct 21, 2012 | 2002 Ford Focus

1 Answer

My 2002 pt cruiser died while I was driving first the oil light came on then it just died! I just had the oil changed 3 days prior to it dying some of the codes I received were 0340 1684 1685...


P0340 is cam position sensor. P1685 is for the key(has a chip in it) P1684 is battery has been disconnected. If the engine will still crank then codes P1684 & P1685 are probably old codes. So if the car will still crank, lets forget about those codes and focus on P0340 A bad cam position sensor will cause the engine to die and not allow it to start back up. Replace the cam position sensor and clear the code and the car should start up.

Oct 16, 2012 | Cars & Trucks

1 Answer

Have a 1997 ford explorer with 4.0 sohc that died at stop and would not start. cranked but no start. error code was p0340. replaced crank sensor and started but died again in less than 2 minutes. still...


p0340 states: Cam Position Sensor A circuit (Bank 1, or single sensor)

p1318 : unknown code cannot find online or in my code reader definitions.

remember the code does not mean the part is bad just where to look for bad wires, connectors and to test for bad parts.

Sep 16, 2012 | Ford Explorer Cars & Trucks

1 Answer

Ford focus 2001 check engine light p0340 problems


P0340....Camshaft Position Sensor 'A' Circuit (Bank 1 or Single Sensor)

check the wiring connections first before you replace it

Sep 26, 2011 | Cars & Trucks

1 Answer

Ford f350 crew cab super duty 7.3 diesel runs rough and turns off randomly while driving sometimes restarts in neutral allot of times i have to stop and put it in park turn key completely off position I...


This is a case of which came first.
The stalling is most likely caused by your Cam Sensor. The description for Diagnostic Test Code (DTC) P0340 is "cam sensor circuit malfunction" This is a VERY COMMON problem on 7.3L diesel engines. Ford has had a lot of trouble with these.

The description for DTC P0470 is "exhaust back-pressure sensor circuit malfunction" This code can be caused by the EBP sensor, the circuits to the EBP sensor or a faulty Powertrain Control Module (PCM)

The description of DTC P1211 is "Injection Control Pressure (ICP) above or below desired" This can be caused by the engine stalling. It can also be caused by several other things, including low engine oil level or a possible faulty PCM. (Check you engine oil level FIRST.)

The troubleshooting charts needed to properly diagnose DTCs P0470 and P1211 depend on whether these codes are Key-On-Engine-Off (KOEO), Key-On-Engine-Running (KOER), or "continuous memory" codes. If you retrieved these codes with a generic OBD scan tool, then they are definately present in "continuous memory". However, a scan tool with the capabilities to read KOEO and KOER codes MUST be used to determine if these are "HARD" or "INTERMIITTENT" faults. The troubleshooting steps vary greatly depending on this information.

Personally, I would start with the lowest number code first (P0340). Replace the cam sensor. Please note: this is the MOST LIKELY cause of the problem, but not the only POSSIBLE cause. Then clear all the fault codes and drive the truck to see if this or the other codes return.

Jun 11, 2011 | 1999 Ford F250 Regular Cab

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

1 Answer

I have a 2006 Ford Focus V4. The car starts fine but everytime I slow down or come to a complete stop the car shuts off. The check engine light comes on shortly after I start the car. Not sure what this...


take it to your local autoparts store(prefferably Autozone) and tell them your check engine light is on. they will run a diagnostics free of charge. But note: the light must be lit(check engine light) when you go there or else they wont be able to run the diagnostics if the check engine light is off. this should narrow down your problem

Sep 24, 2009 | 2006 Ford Focus

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