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jimbo-jim
User

Aug 18, 2019, 7:45 AM

Post #1 of 4 (250 views)
po405 Sign In

I have a 2000 Silverado 2500
I got a code of po405 so I checked the wiring and everything looks good. so I bought a egr valve and for about a week no problems and now it's back on well it's pending. any sugestions


Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Aug 18, 2019, 8:35 AM

Post #2 of 4 (248 views)
Re: po405 Sign In

You could have some carbon buildup in the engine getting caught in the pintle.
There could be an issue with the wiring or plug connections
It could be a bad PCM



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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



jimbo-jim
User

Aug 18, 2019, 6:29 PM

Post #3 of 4 (226 views)
Re: po405 Sign In

thanks for those tips . but let me back up a bit before the code po405 I had a po449 evap valve current so i'm wondering if the two could have something to do with each other ? the 449 code is not coming up and the 405 is now pending.


Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Aug 26, 2019, 9:02 AM

Post #4 of 4 (163 views)
Re: po405 Sign In

I don't believe they have anything to do with each other.



~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.







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