Question about 1998 Chrysler Concorde

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I have been getting a code p0406 lately algong with multiple cylinder misfire codes in a 1998 Chrysler Concorde. I know the p0406 is a egr hi voltage code could this be causing my misfires also if I idle for awhile and then shut the motor off and restart it within a few minutes it will hardly idle or move once you get going finally it clears up. Are all these possibly related to the same problem

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  • John Chiola Sep 12, 2009

    So in your opinion the egr valve could be responsible for all these symtoms



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It's really pretty simple - it can be open when it isn't supposed to be, or it can be closed when it is supposed to be open. If it is open when it is not supposed to be open, at idle for instance, It will act like one monster vacuum leak and the engine will not idle or will idle really roughly. If it doesn't open when it is supposed to open you will probably experience a symptom of "pinging" or "knocking" since the combustion chamber temperature will be higher than normal (one of the main causes of pinging in an engine).

Posted on Sep 12, 2009

  • Bill Schilz
    Bill Schilz Sep 12, 2009

    Yes, absolutely!



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Replaced egr valve after code p0406 and still getting code and stalling and spitter sputtering when it occurs , but it only happens once car gets hot at certain temp

The code problem is related to the EGR valve but not necessarily the valve itself. There is a high input in valve position sensor that can be the sensor ---wiring short to positive and ECM. Check the connections for moisture and are not shorting out. Check that the wiring is not touching any hot parts of the motor and has burnt through

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Why is the engine like blinking on my 2004 chrysler concorde

the engine light blinks when the engine has a misfire the large auto parts stores will scan it for free a code p0301 is cylinder one misfire a p0306 is cylinder number six

Sep 27, 2012 | 2004 Chrysler Concorde

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Im assuming your asking about the ODB-II codes, this code,P0300 Random/Multiple Cylinder Misfire Detected.
A P0300 diagnostic code indicates a random or multiple misfire. If the last digit is a number other than zero, it corresponds to the cylinder number that is misfiring. A P0302 code, for example, would tell you cylinder number two is misfiring. Unfortunately, a P0300 doesn't tell you specifically which cylinder(s) is/are mis-firing, nor why.
Here are a few things that could be the cause.
  • Faulty spark plugs or wires
  • Faulty coil (pack)
  • Faulty oxygen sensor(s)
  • Faulty fuel injector(s)
  • Burned exhaust valve
  • Faulty catalytic converter(s)
  • Stuck/blocked EGR valve / passages
  • Faulty camshaft position sensor
  • Defective computer

    I would start things out with a tune up, new plugs and wires, wires break down after time and could be grounding out, or arcing between themselves causing a misfire.
  • Jul 05, 2012 | Cars & Trucks

    1 Answer

    I have a 2006 chrysler town and country and the code or P0406 came up and I would like to know how to fix it and what it means? Thankyou

    P0406 is EGR position sensor circuit high input. You need to replace the EGR sensor, but it's part of the EGR valve assembly. About $80.00 for the part.

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    When the misfire monitor detects a misfire, it will trigger the check engine light with the specific cylinder number as the last digit in the P030X code. For instance cylinder 1 misfire is P0301, cylinder 2 is P0302 etc. In this case we have either multiple cylinders misfiring, or the computer simply can't determine the specific cylinder, and as such we are left with the P0300 in computer memory.

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    Base engine concerns: low compression, valve train problems and timing issues
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    sounds like its time for a coil pack and any connector upgrades chrysler has. have a good day DB

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