Question about 1999 Dodge Ram

3 Answers

I ran a code on my 99 dodge ram 1500 and it came back with " no cam signal at pcm" what does that mean exactly

Posted by on


3 Answers

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points


    An expert that got 20 achievements.


    An expert that got 10 achievements.


    An expert that got 5 achievements.

  • Dodge Master
  • 8,841 Answers

Hi, the camshaft position sensor signal is not reaching the powertrain control module. This can be a problem with the sensor, the connector, or the wiring. The sensor is inside the distributor. See figure below and some test procedures you can try from Please let me know if you have more questions, and thanks for using FixYa.

i ran a code on my 99 dodge ram 1500 and it came - jturcotte_695.gif

To completely test this sensor and circuitry, you need the DRBII scan tool, or equivalent. This is a test of the camshaft position sensor only.
For this test you will need an analog (non-digital) voltmeter. Do NOT remove the distributor connector. Using small paper clips, insert them into the backside of the distributor wire harness connector to make contact with the terminals. Do NOT damage the connector when inserting the paper clips. Attach the voltmeter leads to these clips.

  1. Connect the positive voltmeter lead to the sensor output wire.
  2. Connect the negative voltmeter lead to the ground wire.


        Fig. Camshaft Position Sensori ran a code on my 99 dodge ram 1500 and it came - jturcotte_697.gifc
        Fig. Camshaft Position Sensor wires: (1) ORN (5v supply), (2) BK/LB (sensor ground), (3) TN/YL (camshaft position sensor signal)

        1. Turn the ignition ON . Rotate the engine. The meter should show a reading of less than 1 volt and a high voltage reading of 5.0 volts as the high and low points on the wheel pass the sensor.
        2. If there is no voltage reading at all, check the meter connections.
        3. If voltage is still not present, check for voltage at the supply wire.
        4. If 5.0 volts is not found at the supply wire, check for voltage at cavity A-17 of the 32-way connector. Leave the engine controller harness connected for this test.
        NOTE If voltage is not found at the PCM connector, you will need to diagnose the system using a DRBII scan tool, or equivalent, or take the vehicle to a qualified shop.

        1. If voltage is present at the engine controller connector, but not the supply wire:
          1. Check continuity between the sensor and supply wire. This is checked between the distributor connector and cavity A-17 . If continuity is not present, repair the wire harness.
          2. Check for continuity between the camshaft position sensor output wire and cavity A-18 at the engine controller. If continuity is not present, repair the wire harness.
          3. Check for continuity between the ground circuit wire at the distributor connector and ground. If continuity is not present, repair the wire harness.

        2. Crank the engine while observing the voltmeter. The voltmeter needle should fluctuate 0-5 volts, approximately. This will verify the camshaft position sensor is operating properly and a sync pulse signal is being generated.
        3. If a sync pulse signal is not detected, and all other variables have been eliminated, replace the camshaft position sensor.

        Posted on Jan 02, 2011

        • Level 1:

          An expert who has achieved level 1.


          An expert that has over 10 points.


          An expert whose answer got voted for 2 times.

          Problem Solver:

          An expert who has answered 5 questions.

        • Contributor
        • 16 Answers

        The camshaft positioning sensor is bad, its located at the camshafts somewhere, second option is the wiring

        Posted on Jan 02, 2011

        • Level 1:

          An expert who has achieved level 1.


          An expert that has over 10 points.

          Problem Solver:

          An expert who has answered 5 questions.

        • Contributor
        • 5 Answers

        PCM stands for Power Control Module and No cam signal could be that the cam sensor is disconnected. see if the cam or crank sensor is connected.

        Posted on Jan 02, 2011

        1 Suggested Answer

        • 2 Answers

        SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

        Hi there,
        Save hours of searching online or wasting money on unnecessary repairs by talking to a 6YA Expert who can help you resolve this issue over the phone in a minute or two.

        Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.

        Here's a link to this great service

        Good luck!

        Posted on Jan 02, 2017

        Add Your Answer

        Uploading: 0%


        Complete. Click "Add" to insert your video. Add



        Related Questions:

        1 Answer

        No cam signal at pcm

        Recheck the cam sensor and the wires that connect to it.

        Feb 12, 2014 | 2001 Dodge Durango

        2 Answers

        My 96 dodge ram 1500 4x4 with a 5.2 ran great and

        Kind of sounds to me like you have an o2 sensor problem.

        Aug 07, 2013 | 1998 Dodge Ram 1500 4WD

        3 Answers

        How to repair a check engine on a 2005 dodge ram 1500

        When "cjeck engine" light turn on, means that some fault code is stored in the PCM (computer) you will need scaner the PCM to know exactly what code is there; sometimes Autozone or AutoShop with scanner reader make this job for free. With this code number we could send additional details to diagnostic and solutions.

        Keep us updated.

        Jun 09, 2011 | 2005 Dodge Ram 1500

        1 Answer

        What does the p1391 code on a 99 dodge ram 1500 5.2l v8 meen

        check engine light and code P1391 crank or cam position sensor

        The above can cause rough idle on the Dodge Ram 1500 5.2L V8 Engine.

        Can try to replace the sensor, but verify that the wires are ok first.

        Aug 12, 2010 | Dodge Pickup Cars & Trucks

        2 Answers

        1999 Dodge Ram 1500 318 engine no spark no signal to coil i changed cam positioner sensor and crank positioner sensor still no spark could it be a bad wire (ground)somewere

        Check the ASD relay in the fuse box. Swap it with the starting relay. If the engine fails to roll over. Thats your problem. If not, check and see if your fuel injector connectors have voltage to them if not its a bad PCM. Hope this helps.

        Jun 05, 2010 | 2000 Dodge Ram 1500 Truck

        1 Answer

        P1391 c0de 2002 dodge ram van no start

        Code P1391 Loss of crank or cam sensors,P0340 No cam signal at the pcm. I would replace the crank sensor first. Your cam sensor is part of the dist. on 5.2/5.9 engines.
        Hope that helps.

        Mar 16, 2010 | 2001 Dodge Ram 2500 Truck

        1 Answer

        97 dodge ram 1500 2wd automatic 5.8 lt. engine codes 12, 46, 21, 56.

        12 problem with battery battery input to pcm disconnected within the last 50 ingnition key on cycles. 46 charging system voltage too indicates that battery voltage is not regulated. 21 problem with o2 sensor signal circuit. 56 no code for #56

        Nov 03, 2009 | 1997 Dodge Ram 1500 Club Cab

        1 Answer

        What does 12, 43 fail engine cods mean for 1997 dodge Ram mean


        Aug 02, 2009 | 1997 Dodge Ram 1500 Club Cab

        2 Answers

        P0601 code, what do i do, dodge 2001 4wd

        A code P0601 in most cases means the PCM has gone bad. This is possibly due to a short-circuit inside the PCM. Or, if you disconnect the wires/connector from the PCM while the battery is still connected, that may also cause this code. The PCM is the engine computer.

        Mar 26, 2009 | 2001 Dodge Ram 1500 Truck 2WD

        1 Answer

        1996 Dodge 1500 died while driving, no power to coil

        the auto shut down relay supplies the voltage for the coil and injectors. it is activated by the powertrain control module. the pcm will not activate it if it doesnt get a signal from the cam or crank sensor or if the vehicle dont start due to a lack of fuel it will shut the signal off.

        Dec 31, 2008 | 1996 Dodge Ram

        Not finding what you are looking for?
        1999 Dodge Ram Logo

        1,590 people viewed this question

        Ask a Question

        Usually answered in minutes!

        Top Dodge Experts


        Level 3 Expert

        80339 Answers

        Colin Stickland
        Colin Stickland

        Level 3 Expert

        22326 Answers

        Ronny Bennett Sr.
        Ronny Bennett Sr.

        Level 3 Expert

        6927 Answers

        Are you a Dodge Expert? Answer questions, earn points and help others

        Answer questions

        Manuals & User Guides