Exhaust Filter Over Limit Service Now - but my truck has no DPF

sidneser · Mar 16, 2019

Hello, Im new to the forum and could use some help.
I have a 2014 6.7 that I bought used a year ago with 55k miles... It now has 74k.
While driving back to Austin from Houston today the check engine light came on and the warning Exhaust Filter Over Limit Service Now came on. The truck got a bit sluggish so I drove it for another 5 miles and found a place to pull over. I shut it off for a while and researched the warning on my phone and learned that the warning had to do with the DPF. I restarted it after about 10 minutes and kept driving... all normal . The warning was gone but the check engine light was still on. It drove fine for another hour and the warning came back on. I was about 20 miles from home so just drove it on in.
The truck's EGR and DPF were deleted and straight piped by the previous owner. He also installed an EZ LYNC tuner.
Any ideas as to why Im getting this warning?

Thanks in advance,
Joey

Slamnslash · Mar 18, 2019

No idea other than the tune please keep us updated

powerstrokeshellback · Mar 18, 2019

That's odd but a tuning issue.

sidneser · Mar 18, 2019

Update... I learned a few things.
1. Fuel filter bowl on frame was not screwed in all the way... this was causing a low fuel pressure warning. Trying to be careful not to over tighten, i was a complete turn too loose. There is a tab that is a hard stop, just dont crank on it.

2. My EZ Lync module had to be reset. Once I reset it, I read my codes and cleared them. Drove the truck and no more issues.

Im guessing that on my long drive that the low fuel pressure eventually triggered the exhaust filter warning... not sure those are connected, but it kinda makes sense... low pressure issue in triggers exhaust issue out... Lets see what happens after a while of driving. If I get any more info, ill update again.

Andrew6.7 · Jun 21, 2020

I have a 14 f250 6.7 deleted/tuned with ez lynk, 5” exhaust. I was on my way home and got the same warning light “exhaust filter over Limit” the tuck felt sluggish the the engine cut off i checked my filter bowl and it was a half turn loose. I drained a little out earlier that day several hours before this happened. Do you think the same thing will fix mine?

Shane_m · Feb 7, 2020

How did it work out? Any further issues?

ZMANN · Jun 21, 2020

sure reads like the same issue

give it a go

Andrew6.7 · Jun 29, 2020

Turns out my injection pump blew sending metal particles through my entire high pressure fuel system. I had to get a new pump, lines, rail and injectors

Jstahley · Jul 8, 2020

Was it the low pressure pump that took out the high pressure pump or just the high pressure pump that **** the bed

Andrew6.7 · Jul 9, 2020

As soon as i got the truck back i had to go back the next day and replace the lift pump so my guess is yeah.

Grant Henning. · Jan 8, 2021

Andrew I just had the same thing happen to my truck. 2014 with 129k miles. What did it cost you to repair.

LouHolz · Jun 17, 2021

OK so after tightening the frame filter bowl and clearing the codes, all is well, I have driven about 400 miles. I had also noticed the whining noise after changing the filter other people mentioned, but everything was working fine until recently, after tightening the bowl the whining noise went away also.

Exhaust Filter Over Limit Service Now - but my truck has no DPF

Our Vendors

Top Contributors this Month

Recommended Communities