Question about 2006 Dodge Charger

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2006 dodge charger, er code p0406, check egr harness for 5v power on yellow with pink wire and no voltage 0 car is idling a little rough and has slight hesitation when accelerating.replace egr before i found 0 voltage.Also would like a diagram of the relay locations in the fuse box.there are 4missing relay plug sockets

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  • sherrygrant Oct 07, 2009

    EGR was replaced with new one it came as 1 piece just like the one that was removed.Per the dodge factory manual the yellow wire with pink trace should have 5V, it does not. Most car that i have worked one with egr problems take a few minutes of driving after resetting the light to trigger the egr code again this car will not clear the code at all it relights instantly.As i hope you are aware per the factory manual there are a lot of electrical harness issues with this car and it starts out by asking the tech to verify that there is power on this wire.I also stated that there are relays that are missing in the fuse box there sockets are powering up on ignition so that is why am asking for some help in identifying what might be missing here.Chrysler in there infinite wisdom has neglected to list what these relay location are used for.

  • sherrygrant Oct 07, 2009

    problem solved, severely chaffed wiring harness repaired and all communicate restored to egr valve all codes reset,and 26 miles with no issues.Thank you VERY little emission"GURU" you one answer wonder.FYI fuses are small and square and have amp ratings on them Relays are bigger and have multiple prongs I'm no 'Guru" but i know the difference between fuse and relays.



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Every fuse box has empty slots, so that is not the issue, this problem is this, the "EGR valve position sensor high signal return detected", this means that the EGR system is working, just the fact it generated a trouble code bears that out, this is a known problem with EGR system, the repair is this you replace the EGR valve and the EGR valve position sensor which is located on the top the valve, the issue is this, the valve is not fully seated giving a high closed voltage signal or the sensor is out of calibration, it is suggested in most all cases on this type of valve the sensor and the valve should be a matched pair. this part is covered under the 7 year 70,000 mile emissions warranty if it is a USA car.

Posted on Oct 07, 2009

  • yadayada
    yadayada Oct 07, 2009

    The 5 volt reference signal to the EGR valve sensor (yellow wire u speak of) comes directly from the PCM, (powertrain control module) this is the computer that controls the engine and the emissions system to include the EGR valve, it doesn't go through any relay of any kind, only the relays used in the car are listed in the owners manual, empty slots are always left for future additions to the electrical system, which may be added to other models.



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