cannot complete regen
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Cross-Country
Joined: May 2019
Posts: 62
Likes: 15
From: Bethalto Illinois
cannot complete regen
My 2019 6.7 never completes the regen. I get a message saying that the "exhaust filter is full and to drive it to clean it"
I do mainly in town driving, so I took it on two 1 hours drives at 70mph, it shows a message that the: exhaust is cleaning."
This cycle just keeps repeating daily.
I used Forscan to check the temps on the EGT sensors and all of them were reading normal temps.
I'm thinking that maybe deleting may be the best option.
I do mainly in town driving, so I took it on two 1 hours drives at 70mph, it shows a message that the: exhaust is cleaning."
This cycle just keeps repeating daily.
I used Forscan to check the temps on the EGT sensors and all of them were reading normal temps.
I'm thinking that maybe deleting may be the best option.
Lead Driver
Joined: Dec 2020
Posts: 8,640
Likes: 2,435
You're saying that everyday when you first start it up, the exhaust filter full message pops up? When it says cleaning, have you monitored the DPF % to see how low it gets? If it truly was not burning down the truck would go in to derate, so it must be completing a regen to an extent, enough to allow you to continue using the truck. No idea why you would get the full message daily.
4th Gear
Joined: Oct 2023
Posts: 4
Likes: 2
Was driving a 2020 work truck that started doing this, even multiple times a day. It didn't smarten up until I got the 'drive to clean' message just before leaving a small town with a long, steep hill. I stopped on the exit, shut down the truck, restarted and it said 'cleaning...' used manual shifter to keep it around 2250 rpm all the way up the hill and beyond until it finished the cleaning and haven't seen it come back since.
Laughing Gas
Joined: Jul 2017
Posts: 764
Likes: 194
From: Elephant Butte NM
I was under the impression that a manual regen had not been worked out with the forscan. Am I missing something?
Hotshot
Joined: Jul 2013
Posts: 14,301
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Lead Driver
Joined: Dec 2020
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Without additional information from the OP who knows what's really going on.
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Thread Starter
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Cross-Country
Joined: May 2019
Posts: 62
Likes: 15
From: Bethalto Illinois
Problem finally solved. My DEF tank was 1/2 full so I thought that couldn't be the problem, but after trying to figure this out for a month or so I finally read that filling up the DEF tank could help. I filled it up and the messages went away and have not returned. So apparently a 1/2 full DEF tank can somehow cause issues.
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