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Old 02-13-2011, 09:10 PM
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PCM Flash for P0406 Code?

I got code P0406 and a check engine light on now. I read on other forums that there could be a PCM flash per a TSB that could solve this. Is this true or not. Any help is greatly appreciated.
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Old 02-13-2011, 09:39 PM
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Re: PCM Flash for P0406 Code?

first of all.....dont believe what you read on "other forums"....LOL...J/K

How many miles on it? If you have in the 50K plus....time for a new EGR. They range anywhere from $40-$80
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Old 02-13-2011, 10:11 PM
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Re: PCM Flash for P0406 Code?

Its about to hit 100,000. OUCH! I dont, was trying to find the location of the EGR. But is there a flash update that could be needed?
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Old 02-13-2011, 10:16 PM
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Re: PCM Flash for P0406 Code?

a flash will do it no good. the egr is on the back right cornerof the intake manifold, just behind the TB on the drivers side....next to the firewall. Its has a gold colored tube that runs from it to the intalke manifold. DO NOT touch that tube if the Jeeps been running.
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Old 02-13-2011, 10:19 PM
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Re: PCM Flash for P0406 Code?

Thanks Bro. I will pick one up and put it on. Do you recommend a dealer one or can I go aftermarket ie Advanced autoparts store?
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Old 02-13-2011, 10:35 PM
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Re: PCM Flash for P0406 Code?

well....thats up to you and what your willing to pay. I believe advanced has them for like $40....the dealer/oem will be more.
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Old 05-04-2011, 02:53 PM
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Re: PCM Flash for P0406 Code?

I'm also getting this code, so just swap out the EGR? I think the error is like po406 EGR high flow circuit A
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Old 05-04-2011, 03:14 PM
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Re: PCM Flash for P0406 Code?

Dealer wants $180 just to straight swap out EGR, $240 if they confirm my diagnosis of the issue. How hard is this to get the part from them and do myself?
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Old 05-05-2011, 11:53 AM
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Re: PCM Flash for P0406 Code?

On the 5.7 its a piece of cake.just did mine -119k and it is SOOOOO much smoother. I got mine at autozone 40 something bucks,however -hemi anyway- get the little blue seal for the egr tube to the intake from the dealer $5, mine was kinda jacked up. That way you dont have to do it twice


edit: I was not getting codes. I just changed it cause of the miles and rough idle.
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Old 05-08-2011, 02:03 PM
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Re: PCM Flash for P0406 Code?

Had the EGR changed friday, as 4. whoa says, Jeep feels much healthier now all around, couldn't be happier, hopefully that dumb light stays off!
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