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U might want to make sure the def pump isn't leaking.

U might also try resetting the nox sensor with Gretio. Total guess here.

I'm surprised the def quality test isn't removing the count down. Is saying it is passing the test?
 

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Discussion Starter · #23 ·
U might want to make sure the def pump isn't leaking.

U might also try resetting the nox sensor with Gretio. Total guess here.

I'm surprised the def quality test isn't removing the count down. Is saying it is passing the test?
I will re-run it in a few minutes after this last service reset finishes if no go
Thanks
 

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2015 CTD
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Ok all the above ... Regen complete .. bit of a cool down period then Def said test complete successful.
Still no codes but still warning and count down.
Maybe it will go away on the 10-15 mile drive to dealer ... LOL
Thanks for the help !
It can take a few tries and can be difficult to clear.

I did find this for duramax motors but the emissions are the same.
 

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Ok all the above ... Regen complete .. bit of a cool down period then Def said test complete successful.
Still no codes but still warning and count down.
Maybe it will go away on the 10-15 mile drive to dealer ... LOL
Thanks for the help !
I got the countdown of death once after I had an issue with fuel injector. It went away after like 10 miles. Get out on the freeway and put 10-20 miles on it to see if it clears up. These cars love freeway.
 
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