DEF error & reduced power warning
Thread Starter
|
Tuned
Joined: May 2010
Posts: 494
Likes: 129
From: Pleasanton, CA
DEF error & reduced power warning
This is on my son’s truck a 2015 F250 6.7l 4WD with 139k-miles.
About 4-days ago my son’s truck popped up this warning on his dash cluster.
”In 50-miles speed limited to 50-mph” also “exhaust fluid system fault”. These two messages came up together on the cluster.
Checked for codes he has a 207F code “Generic reductant quality performance”
His DEF tank was below half so he added a jug, 2.5 gal, but no change. His fuel warning light is on meaning low of fuel not sure if anything is related to that? He has about 15-miles to the 50-mph limiting so we haven’t added fuel yet.
*fuel filters are at 15k-miles so those need changing.
Thoughts on this…wondering where to start?
Thanks in advance,
Mike
About 4-days ago my son’s truck popped up this warning on his dash cluster.
”In 50-miles speed limited to 50-mph” also “exhaust fluid system fault”. These two messages came up together on the cluster.
Checked for codes he has a 207F code “Generic reductant quality performance”
His DEF tank was below half so he added a jug, 2.5 gal, but no change. His fuel warning light is on meaning low of fuel not sure if anything is related to that? He has about 15-miles to the 50-mph limiting so we haven’t added fuel yet.
*fuel filters are at 15k-miles so those need changing.
Thoughts on this…wondering where to start?
Thanks in advance,
Mike
Laughing Gas
Joined: Oct 2014
Posts: 962
Likes: 114
From: Middle TN
This is on my son’s truck a 2015 F250 6.7l 4WD with 139k-miles.
About 4-days ago my son’s truck popped up this warning on his dash cluster.
”In 50-miles speed limited to 50-mph” also “exhaust fluid system fault”. These two messages came up together on the cluster.
Checked for codes he has a 207F code “Generic reductant quality performance”
His DEF tank was below half so he added a jug, 2.5 gal, but no change. His fuel warning light is on meaning low of fuel not sure if anything is related to that? He has about 15-miles to the 50-mph limiting so we haven’t added fuel yet.
*fuel filters are at 15k-miles so those need changing.
Thoughts on this…wondering where to start?
Thanks in advance,
Mike
About 4-days ago my son’s truck popped up this warning on his dash cluster.
”In 50-miles speed limited to 50-mph” also “exhaust fluid system fault”. These two messages came up together on the cluster.
Checked for codes he has a 207F code “Generic reductant quality performance”
His DEF tank was below half so he added a jug, 2.5 gal, but no change. His fuel warning light is on meaning low of fuel not sure if anything is related to that? He has about 15-miles to the 50-mph limiting so we haven’t added fuel yet.
*fuel filters are at 15k-miles so those need changing.
Thoughts on this…wondering where to start?
Thanks in advance,
Mike
Thread Starter
|
Tuned
Joined: May 2010
Posts: 494
Likes: 129
From: Pleasanton, CA
Thanks for your reply and I couldn’t agree more about the low fuel, which I have warned him about in the past. Millennials…sheez!
I believe a few weeks back he had some regen message which was cleared after he drove it about 50 miles on the freeway. Wonder if that was an early warning to this current problem?
Mike
I believe a few weeks back he had some regen message which was cleared after he drove it about 50 miles on the freeway. Wonder if that was an early warning to this current problem?
Mike
Laughing Gas
Joined: Apr 2007
Posts: 871
Likes: 74
From: Houston TEXAS
But any "fix" is almost guaranteed to be temporary.
My first thoughts are "it's delete time". It's a 10yr old truck (like mine) it's surprising it isn't deleted yet. I waited over 8 years due to an 8yr/100k Ford ESP warranty.
Shortly after it expired I got a DEF fault warning ( for the second time since new). Took it to dealer to see if it was covered under the service bulletin 21M01 ..... it wasn't.
So over $300 later they replaced a $15 relay and it was fixed. Shortly thereafter aftermarket parts were ordered and oem parts fell off.....
Best $2000 I've spent on it so far. And it runs SOOOOO much better.
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Laughing Gas
Joined: Oct 2014
Posts: 962
Likes: 114
From: Middle TN
He lives in California. I don't think there is anything in that 2K you spent that magically waves their emissions testing.
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Fleet Mechanic
Joined: Mar 2013
Posts: 1,661
Likes: 1,062
From: Montana
You might get more answers on how to fix it in the 6.7 subgroup here - 6.7L Diesel
But any "fix" is almost guaranteed to be temporary.
My first thoughts are "it's delete time". It's a 10yr old truck (like mine) it's surprising it isn't deleted yet. I waited over 8 years due to an 8yr/100k Ford ESP warranty.
Shortly after it expired I got a DEF fault warning ( for the second time since new). Took it to dealer to see if it was covered under the service bulletin 21M01 ..... it wasn't.
So over $300 later they replaced a $15 relay and it was fixed. Shortly thereafter aftermarket parts were ordered and oem parts fell off.....
Best $2000 I've spent on it so far. And it runs SOOOOO much better.
But any "fix" is almost guaranteed to be temporary.
My first thoughts are "it's delete time". It's a 10yr old truck (like mine) it's surprising it isn't deleted yet. I waited over 8 years due to an 8yr/100k Ford ESP warranty.
Shortly after it expired I got a DEF fault warning ( for the second time since new). Took it to dealer to see if it was covered under the service bulletin 21M01 ..... it wasn't.
So over $300 later they replaced a $15 relay and it was fixed. Shortly thereafter aftermarket parts were ordered and oem parts fell off.....
Best $2000 I've spent on it so far. And it runs SOOOOO much better.
I feel for the folks that do have to deal with the emissions testing every year, especially in situations like this where the seemingly best solution won't work for them.
Thread Starter
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Tuned
Joined: May 2010
Posts: 494
Likes: 129
From: Pleasanton, CA
Yep live in CA no way to delete with smog test/inspection every two years.
Thanks for the info maybe I’ll finally pull the plug and move south, east maybe north…anywhere but here
Mike
Thanks for the info maybe I’ll finally pull the plug and move south, east maybe north…anywhere but here
Mike
Laughing Gas
Joined: Apr 2007
Posts: 871
Likes: 74
From: Houston TEXAS
Sounds like a PITA but it's an option I guess?
lol
Thread Starter
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Tuned
Joined: May 2010
Posts: 494
Likes: 129
From: Pleasanton, CA
Ya I have considered the delete/no delete for smog test but that does sound bothersome every two years.
My last smog check, earlier this year, the guy crawled all over my truck and underneath looking for those mods, etc. I think CA is cracking down on the Smog guys to do a better job?
Mike
My last smog check, earlier this year, the guy crawled all over my truck and underneath looking for those mods, etc. I think CA is cracking down on the Smog guys to do a better job?
Mike
Mountain Pass
Joined: Jul 2017
Posts: 168
Likes: 11
From: Summit Park, UT
Bummer! We got the same message today. We hooked up our laptop with the Forscan software to the OB2 port and it told us the DPF was 132% full of soot. We then( and I used the term "we" loosely, because my wife did all the computer stuff) forced a regen which bought the soot level down to 12%. The program called that a success. We did too.
Now, the slightly harder part is to clear the P207F code and messages. Which are permanent. She's still googling the crap out of that. We'll tackle it tomorrow.
We replaced the DEF pump, DEF injector and heater in the fall of '22. We're a little disappointed that we're having this issue now.
I'll update what we find out.
Now, the slightly harder part is to clear the P207F code and messages. Which are permanent. She's still googling the crap out of that. We'll tackle it tomorrow.
We replaced the DEF pump, DEF injector and heater in the fall of '22. We're a little disappointed that we're having this issue now.
I'll update what we find out.
Laughing Gas
Joined: Apr 2007
Posts: 871
Likes: 74
From: Houston TEXAS
It also put the truck in a slightly de-rated power mode. Not total limp mode, but you could tell it WAS NOT running at full power.