Question about 2005 Chrysler PT Cruiser

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2005 PT Cruiser 2.4

P0340 no cam sensor signal at pcm...car runs great till it reaches operating temp then it will set P0340 and if you give it too much throtle it will fall on its face simular to a dead or dying fuel pump...fuel pressure stays at 58 psi all wires ohm OK all back probes read ok...scan tool shows fuel injector pulse width drop to zero when engine falls on its face......HELP!!!

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  • Anonymous Mar 16, 2014

    the car has enough fuel to start by wont stay running and if you try to ref it it falls on its face

  • Anonymous Mar 16, 2014

    the car has enough fuel to start but will only run for 30 sec then dies if you try to give it gas it falls on face and dies

  • Anonymous Mar 24, 2014

    CAR FALLS ON ITS FACE AT ABOUT 60

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I think it sounds like your CAM sensor has fallen off or is faulty.

The computer controls the ignition timing and the injectors to squirt fuel in to the pistons at the right time. If the computer doesn't sense the cam angle correctly as you accellerate it can't put fuel into the pistons to match the opening and closing of the valves.

If you have a manual you can strip down the top of the engine to see the timing gears on the end of the Cam shaft and see if you can see the cam sensor and if there is anything obviously wrong (i.e. its missing) but you may be as well getting to the dealer to have it checked out and fixed. So the good Fuel pressure will not really effect the engine falling on its face as its a computer timing issue caused by bad sensor information that's causing the bad running.

Posted on Jul 31, 2008

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2 Answers

Car starts and runs but in reverse starts shaking SES lights up and blinks. Have changed the plugs but are getting a P0340. It's an 1998 Saturn 112,000 miles. What could it be?


DTC P0340 will set if the PCM voltage on cylinder #4 signal wire is not pulled to ground (cam signal pulse) when:
Diagnostic Aids
Important: A cam pulse missing may not affect engine operation.
?€¢
An open or high resistance on the #1 plug wire or plug will result in DTC P0340 setting.


?€¢
Inspect the EIS towers and plug the wire connections for corrosion or other signs of poor retention at connections.


The electronic ignition (EI) module supplies a signal to the PCM whenever it determines that the #4 cylinder fired on its compression stroke. Because of opposite coil tower polarity, the simultaneous fir of #1 and #4 cylinders are of opposite polarity as well. Under most conditions, except decel, the waste spark cylinder fires before the compression cylinder in sequence. The EI module can determine this polarity sequence and voltage amplitude by using capacitive pickup plates located under the 1/4 coil. If the module senses a positive to negative sequence and high negative spike when #4 is on TDC, it pulls the PCM cam signal to ground signaling that #4 has just fired on compression. This signal along with the double pulse received from the CKP sensor, synchronizes spark and fuel timing.
Beside plugs , plug wires need to be replaced as well !

Aug 26, 2016 | Saturn Cars & Trucks

1 Answer

2005 pt cruiser has check engine light on repeatedly over past 6 months


Based on what you said, the PCM is about all that is left.
The code is for an intermittent problem with one of the two cam sensors. (intake)
The PCM is loosing the signal at random times.
It is possible a problem exists with the part on the cam that triggers the sensor, and low battery voltage to the PCM can do it.
Nothing to do with the fuel system or the ignition.

Jul 02, 2012 | 2005 Chrysler PT Cruiser

1 Answer

Got code po340 on 2008 Chrysler PT cruiser. Runs great sometimes when engine light on & rough at other times like not getting gas. Engine light does not come on every day either. Cam sensor or timing...


P0340: Camshaft Position Sensor A - Bank 1 Circuit Malfunction

- 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

Feb 08, 2012 | 2008 Chrysler Pt Cruiser

1 Answer

2002 PT Cruiser. Vehicle shut down while driving. Received P0340 Trouble code..No camshaft position sensor signal at pcm. I replaced Position Camshaft Sensor, book suggests life on these 5-10 years, It...


This could be related to a loose camshaft drive belt. If you have slack in the belt the camshaft will rebound on over run causing the P0340. It can also be a Crackshaft sensor problem too.(P0335) Hope this helps...

Mar 06, 2011 | 2003 Chrysler PT Cruiser

1 Answer

2002 PT Cruiser no spark at coil -had code P0340 changed cam sensor and no more code but still no spark what else can it be


they can run with out a cam sensor but they will not run with out crank signal i would check for crank signal it may not throw a dtc because it wont start.

Dec 15, 2010 | 2002 Chrysler PT Cruiser

1 Answer

Getting code P0340, No camshaft position sensor signal at PCM, should I replace sensor or go straight to timing belt


Replace the cam sensor with a factory sensor. Aftermarket sensors can still trigger the light when nothing is wrong.

Oct 24, 2009 | 2003 Chrysler PT Cruiser

1 Answer

Mil code p0340


Usually means you have a bad cam sensor. Other related problems could be wiring or PCM issue, but 9 times out of 10 it is the Cam sensor.

Jun 10, 2009 | 2005 Chrysler PT Cruiser

1 Answer

Trouble codes


Trouble Code: P0139
O2 (B1 S2) Slow Response
Trouble Code Conditions:Engine started; vehicle driven at 20-55 mph with the throttle open for 2 minutes; ECT at more than 158ºF (70C); catalytic converter temperature is more than 1112F (600C); and EVAP purge is active. O2 Sensor signal voltage switches less than 16 times from lean to rich within 20 seconds during monitoring, or will compare the state of change between the front and rear O2 Sensors and if the differences are greater than a calibrated amount, the DTC will set. 3 good trips are required to turn off the MIL.
Possible Causes:
  • Exhaust leak
  • O2 element is contaminated, deteriorated or it has failed
  • O2 signal circuit or return circuit has failed

Trouble Code: P0344
Camshaft Position Sensor Circuit Intermittent
Trouble Code Conditions:Engine cranking or running; system voltage over 10.5v. The PCM detected an intermittent loss of the CMP Sensor signal during the period of 2.5 complete engine revolutions. The failure counter must reach 20 before this code matures and a code is set.
Possible Causes:
  • Wiring harness fault
  • 5v supply circuit open or shorted to ground
  • Tone wheel/pulse ring is damaged or corroded
  • CMP Sensor has failed
  • CMP Sensor signal circuit is open, shorted to ground or battery voltage or 5v supply
  • CMP Sensor ground circuit is open
  • PCM has failed
  • Trouble Code: P0340
    No Camshaft Position Sensor Circuit Failure
    Trouble Code Conditions:Engine cranking or running, system voltage over 10v. The PCM detected CKP pulses without detecting any CMP Sensor pulses for 5 seconds or 2.5 engine revolutions.
    Possible Causes:
  • CMP Sensor connector is damaged, open or it is shorted
  • CMP Sensor signal circuit is open or shorted to ground or to battery voltage or 5v supply circuit
  • CMP Sensor 5v supply circuit is open or shorted to ground or to battery voltage
  • CMP Sensor ground circuit is open
  • CMP Sensor is damaged or has failed
  • CKP Sensor is damaged or has failed
  • PCM has failed
Good luck....

Nov 05, 2008 | 2005 Chrysler PT Cruiser

1 Answer

P0340 no cam signal


hi greg check our gaz pressure i lock forward to it will find the problem have a good day from montreal canada pierre

Jun 27, 2008 | 2005 Chrysler PT Cruiser

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