08 duramax shows clean exhaust filter msg & then limp mode - anyone help?!?

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Wonast
I'm new, be nice!
Posts: 1
Joined: January 16th, 2019, 7:41 pm

08 duramax shows clean exhaust filter msg & then limp mode - anyone help?!?

Unread post by Wonast » January 17th, 2019, 12:24 am

I bought an 08 chevy duramax a month or so ago. Love the truck, pulls great but the thing keeps throwin' a "clean exhaust filter see owners manual now" message. I googled it and it says to drive at highway speeds for 15-20 minutes. Three times it comes on and then throws a check engine light and goes into reduced power mode. 2 of the 3 times I had been on the highway for about 3 hours. It seems like this is common on these trucks but was curious if anybody had any experience with it?

wiggle16
Getting to know the place
Posts: 13
Joined: January 13th, 2012, 2:13 pm

Re: 08 duramax shows clean exhaust filter msg & then limp mode - anyone help?!?

Unread post by wiggle16 » April 26th, 2019, 1:04 pm

The quick answer on that is that the dpf is choking up but one of the sensors mounted in or around it is faulty and it cant initiate a regen.

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