Question about 2005 Dodge Caravan

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Engine light on code po404&po406

How do i fix them

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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

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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


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SOURCE: 2005 Ram 1500 4wd HEMI PO406 - EGR

Hey greenlee99, your best bet would be to grab one these manuals so that you have pictures and diagrams along with step by step instructions. It will tell you what tools and parts you need. Can't go wrong with having it.

Posted on Feb 15, 2010

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SOURCE: Engine light came on and used my scanner and it

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.ab6f9e9.jpg974a1ec.jpg

Posted on Jun 14, 2010

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SOURCE: Three trouble codes came up

I found this on youtube for you. Hope it helps.

Posted on Jun 26, 2011

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Related Questions:

1 Answer

Had code po404 so changed the sensor, now code po406 is showing up and car idles extremely high. What is causing this and how to I fix it?


OBD Codes have nothing to do with changing parts

Codes are Parameters that are out of range

You check for codes & use them to diagnose the
system that set them & component test to find a problem

So--- Google your codes & read up


Your going to need a shop to find the issue

Nov 05, 2014 | 1999 Chrysler LHS

1 Answer

What do all these codes mean PO135-PO300-PO404-PO102-PO440

po135 is o2 sencer on drivers side. will be the first one. po300 is random/multiple misfire.po404 is a egr code. po102 mass air flow circuit low input. po440 evap emission control system malfunction

Dec 23, 2012 | Cars & Trucks

1 Answer

Po406 trouble code

EGR sensor which could be the sensor or the EGR valve.

Jun 25, 2012 | 2005 Chrysler Town & Country

2 Answers

Aside from the P0406 code, I'm also getting code P1561. Are they related and what can I do to fix it? I have 2006 Dodge Ram 1500.

The po406 is an egr code which is common for a bad egr valve, but check your wiring and check for plugged port or carbon lodged in valve, as far as the p1561 this is not a good code, this must of been gotten with a genric scan tool, i would fix the po406 and then reset the computer readiness monitors and drive it and go from there. hope this helps, good luck

Jan 10, 2011 | 2006 Dodge Ram 1500

1 Answer

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

both codes po406 and po404 refer to a fault in the EGR system
Po404 > Exhaust Gas Recirculation Circuit Range/Performance not within proper range.
Po406> Exhaust Gas Recirculation Sensor A Circuit High (meaning the circuit is open or disconnected)
Without actualy checking the voltages (wiring)
Replace the EGR valve
clear codes
test drive

Sep 07, 2010 | 2005 Dodge Caravan

1 Answer

I have codes po403 &po406 on a 2005 sebring conv.and cannot put out light. i cannot find a e g r valve on it .the car has a 2.7 engine.have change computer

egr is at the rear of the engine. The light isnt going to go out until the problem is fixed. I would check the egr solenoid first. A scanne,r wiring diagram, and tools are needed to dignose this properly.

Aug 31, 2010 | 2005 Chrysler Sebring Conv

1 Answer

PO406 Code

I have 2005 Dodge Caravan SE 2.4cc and the code is P0420 I need now what is the exactly problem. all ways when I try to stop the engine turn off or almost turn off.

Nov 13, 2008 | 2005 Dodge Caravan

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