Question about 1998 Ford Explorer

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Code p0340 came on the reader what do i do - 1998 Ford Explorer

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Camshaft position sensor malfunction. Replace cam shaft sensor. www.rockauto.com

Posted on Feb 04, 2010

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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

Ironfist109
  • 3018 Answers

SOURCE: I have a 1999 BMW

  • There are two Camshaft position sensors. The one this is for is the one by the oil dipstick on the LH side of the engine. If you replaced the other you need to replace this one as well. Both are recommended, in other words when changing one it is recommended to change the other as well.
  • If you have any further questions or comments please feel free to ask and thank you for using FixYa.
  • That being said I sat in a chat and waited for a response from you for 12 minutes. I hope this answers your question.

Regards, Tony

Posted on Jun 13, 2011

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P0340 Problem Code for 03 Jeep Liberty


code p0340 refers to cam shaft position sensora bank 1-circuit malfunction===causes --wiring Cam sensor---ECM. The only connection is the ECM to both units so they may have unpluged the ECM to service the air bag problem. IT could be as simple as using a code reader to reset the CPU. I may also be a coincedence and there may be a fault in the cam position sensor.. I would discuss the matter with the dealer service department to determine what is what.

Oct 23, 2013 | 2003 Jeep Liberty

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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

I have a 1999 BMW 740il I hooked up my OBD code reader and the that came up was p0340. I found out what it ment. I went to the BMW parts department and bought new camshaft sensor and replaced them. Now my...


  • There are two Camshaft position sensors. The one this is for is the one by the oil dipstick on the LH side of the engine. If you replaced the other you need to replace this one as well. Both are recommended, in other words when changing one it is recommended to change the other as well.
  • If you have any further questions or comments please feel free to ask and thank you for using FixYa.
  • That being said I sat in a chat and waited for a response from you for 12 minutes. I hope this answers your question.

Regards, Tony

Jun 13, 2011 | BMW 7 Series Cars & Trucks

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

1 Answer

Ok, used a code reader...


Here is a list (courtesy of www.obd-codes.com).
Symptoms Symptoms can include:
  • Hard starting or no start
  • Rough running / misfiring
  • Loss of engine power
Causes 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
Possible Solutions 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
Best of luck.
Greg
p.s. the code can be reset but if a problem exists, it will return

Jul 03, 2009 | 2002 Hyundai Accent

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