Question about 2005 Dodge Grand Caravan

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I got the code P0406 Exhaust Gas Recirculation Sensor A Circuit High, from the emissions place. the person who started working on my car is in the hospital and i dont remember what sensor this is! it is on the front left of the engine and is a simple fix. i just need to get the part. I got the vehicle used and do not have a manual

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The term EGR stands for "exhaust gas recirculation." what it does is re-route all the unburned exhaust gases in the combustion chamber to the intake manifold to get reburned. Now, that being stated, you DO NOT need EGR at idle, only driving at higher speeds. Such as freeways and high ways. IT will most certainly affect the way your engine runs. It will cause sort of a miss fire condition. The solution here, in my opinion, would be to replace the EGR Solenoid and BOTH gaskets. One should be a cork gasket and the other steel. Replace the gaskets and the EGR Solenoid, should get rid of the problem. To save some money, you can try to remove the EGR Solenoid and clean it thoroughly with brake cleaner and try to reinstall it. This may only be a temporary fix though. If it does work and the light comes on again, then you know for sure you need to replace the EGR Solenoid. good luck!

Posted on May 22, 2010

  • 3rdgenfbody May 22, 2010

    actually what egr does is it takes exhaust gas that is inert and it cools the cylinders down to reduce nox and pings and spark knock

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That sounds like a o2 sensor that would be on your exhaust

Posted on May 05, 2010

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What kind of car is it?

Posted on May 12, 2010

  • RidgelandTec May 12, 2010

    What kind of car is it?


  • RidgelandTec May 12, 2010

    P0406 is an EGR code. Replace the EGR valve and have the light popped. Your problem will go away. Very common problem on caravans.

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1 Answer

P 0406 P0406 Exhaust Gas Recirculation Sensor A Circuit High


Replace the EGR valve & check the vacuum lines for it at both ends

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Code P 0404 P403 and P 406 mean


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P0406 Exhaust Gas Recirculation Sensor A Circuit High


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What will be wrong if I got code p0406 and p 404


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Po404 > Exhaust Gas Recirculation Circuit Range/Performance not within proper range.
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Without actualy checking the voltages (wiring)
Replace the EGR valve
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I have a 2005 Dodge Caravan, it had the P0404 and P0406 come up on the test and wanted to know what the problem was on and what i needed to fix????


p0404
Exhaust gas recirculation-range or performance problem
p0406
Exhaust recirculation valve postion sensor A-circuit high

Aug 30, 2010 | 2005 Dodge Caravan

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Dtc p0405 & p0406 these codes came up when i checked my dtc and would like to know what the codes are and what is needed to correct the problem. any help would be appreciated. I changed the oil and the...


The DTC P0405 is for (Exhaust Gas Recirculation Sensor Circuit "A" Low)

DTC P0406 is for (Exhaust Gas Recirculation Sensor Circuit "A" High)

This would indicate a problem with the EGR valve sensor, or the EGR valve itself is malfunctioning.

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What does the code po406 mean?


P0406 Exhaust Gas Recirculation Sensor A Circuit High

Site below gives instructions for repair. I would try to remove and clean EGR valve before replacing...just depends on your budget..

http://dodgeram.info/tsb/2004/18-021-04.htm

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P1684 Battery Disconnected Within Last 50 Starts
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