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Posted on Dec 29, 2008
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05 Gnd Caravan 3.3L - code: P0406

I have an '05 Grand Caravan w/a 3.3L V6. the daig code is P0406. Please define code & potential cases.

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Mike Butler

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  • Dodge Master 6,674 Answers
  • Posted on Dec 29, 2008
Mike Butler
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Joined: Aug 14, 2008
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Exhaust gas recirculation sensor A (circuit high)
Obviously the sensor or connection is faulty. I'd try cleaning connection with contact cleaner, add some di-electric grease/lube to the connection, check all vacuum lines if applicable & have code erased, and try it.

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The check engine light for my 2005 Dodge Grand Caravan is on. The engine is a 3.8 V6 engine. The error code that it is displaying is P0406 or EGR issue. It is my understanding when you have an issue with...

I would clear the code and see if it returns. If the EGR valve is stuck open, it would make it buck or shutter. If the EGR valve is not functioning right, or clogged up, it will effect proformance. I would replace the EGR valve. I read that it's a common problem.
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My Grand caravan displays fault codes P0401 & P0406 - Is the code P0406 indicating a failed sensor - Where is this sensors located - Thank you Dan

Off the top of my head I beleieve these are EGR codes, the EGR valve is located on the top front left side of the engine, you may need a valve and solenoid.
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EGR position sensor circuit. Either you have a wiring issue or you need to replace EGR solenoid assembly. First check electrical connector at EGR solenoid for corrosion or broken wiring.
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Code p0406

that code stems from egr valve, more than likely its getting "sticky" eventually could lead to being stuck open- just replace it. Its easy on a caravan right in front, 15mins. tops.
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