Question about 2005 Dodge Caravan
How do i fix them
P0404 EGR Exhaust gas recirculation control circuit range/performance. Difference between command and actual exceeds a specified limit
P0406 EGR Exhaust gas recirculation Sensor A Circuit High (excessive flow).
It looks like your egr valve is faulty. You should replace the valve itself and inquire if there is anything else needed. It should only be the egr valve but it could be electrical too.
Replace the valve and clear the error codes. Make sure you unplug your battery before performing maintenance.
Posted on Sep 16, 2008
I had this problem with both codes and did replace the valve. It was $75 from Advanced Auto and I had to order the valve. Both codes came up. I did it today and it took a little more than 2 hours. The bolts are difficult to get off as they are in an awkward space with the alternator up close to the valve. Use 10 mmm on the large bolts and remove the top bolt first. Once done, push or tap the valve up to both expose and help losen the bottom bolt. ONce this is complete, repeat the process to put back. You will also need to remove the line that comes from the EGR Valve to the top engine cover. Hope this helps.
Posted on Jun 13, 2009
po404 is telling the computer that the egr pintle is openwhen it shouldnt be, this sounds like a bad egr valve or carbon is holding it open, remove the valve and check for carbon, this is common on the 4.3 engine, if its carbon then run and rev engine with valve off, then reinstall valve and replace the gasket with an aftermarket gasket that was made for this problem, the new gasket has a screen to stop carbon from going into valve, here a picture of it.hope this is helpful.
Posted on Jun 14, 2010
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Posted on Jan 02, 2017
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