DPF, DEF & EGR Repair in Hillsboro, KS
The short answer
DPF, DEF and EGR repair means fixing the three emissions systems on a modern diesel, which are the most common reason a late-model truck drops into reduced power.
The DPF (diesel particulate filter) traps soot in the exhaust, DEF (diesel exhaust fluid) is the blue-capped fluid that cleans up the exhaust gases, and the EGR (exhaust gas recirculation) system sends some exhaust back into the engine to cut emissions. They get along fine until a winter of short trips around Hillsboro and long idles at the co-op, and then the dash lights up like a Christmas tree. We repair all three and keep your truck legal, so bring it in, or we will come and get it.
Call or text (620) 416-0008. Describe the noise. We'll do the rest.
We answer texts the same day we get them.
Diesel emissions warnings, decoded
Tap the ones that sound like yours.
You ticked 0. That is worth a look.
Text us which onesWhat DPF, DEF and EGR repair at Moxie actually looks like
We explain it in plain words. These systems confuse almost everyone, and nobody should have to decode a dashboard message on their own.
We find out why it failed. A clogged DPF on a truck that makes short trips needs a different fix from one clogged by a leaking injector. Cleaning the filter without fixing the cause just means you are back in a few weeks.
We clean the filter the right way for what is in it. Soot burns off with a forced regeneration, which we run here in the shop. Ash does not burn, so when a filter is full of it we take the filter off and send it to a professional cleaning service. It is usually back in a day or two, and we reinstall and test it.
We repair the emissions systems and keep them working. We do not remove, delete or disable emissions equipment, and we do not offer tuning that defeats it. Tampering with emissions equipment is against federal law, and it can bring heavy fines for the owner and the shop.
Why Hillsboro trusts Moxie with DPF, DEF and EGR repair
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Plain explanations
You will understand what failed and why, without needing to learn the acronyms.
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Dealer-level diagnostics
We can read the DPF and DEF systems and run a forced regeneration in the shop.
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We fix the cause
We look for the engine fault behind the soot, so the repair lasts.
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Warranty in writing
Most repairs carry the NAPA 24/24 nationwide warranty for 24 months or 24,000 miles, and engine and transmission work carries Moxie's own one-year warranty. We tell you which one covers your repair before any work starts.
Call or text (620) 416-0008. Describe the noise. We'll do the rest.
DPF, DEF and EGR myths we hear at the counter
Hover or tap a card to flip it.
Sounds like yours? Tell us what it is doing and we will tell you straight.
Want the details?
Tap any of these to open it.
What clogs up DPF, DEF and EGR systems around here
- Too many short trips or long idles, so the DPF never gets hot enough to burn off its soot
- A failed exhaust temperature or pressure sensor giving the computer bad information
- Old, contaminated or crystallized DEF fluid, often from a jug stored in summer heat
- A failed DEF heater, pump or quality sensor, especially after a cold Kansas winter
- A clogged EGR valve or a leaking EGR cooler
- An engine problem upstream, such as a leaking injector, sending extra soot down the exhaust
How we find the fault
- We read every module and look at how full the computer thinks the DPF is, and why.
- We test the exhaust sensors, since a bad sensor can make a clean filter look clogged.
- We check the DEF fluid quality and test the DEF heater, pump and injector.
- We check the EGR valve and cooler for sticking, clogging and leaks.
- We look for the engine problem that made the soot in the first place, so the fix lasts.
What we check
- DPF soot level and exhaust pressure readings
- Exhaust temperature and pressure sensors
- DEF fluid quality, heater, pump, lines and injector
- EGR valve, EGR cooler and related hoses
- Fuel injectors and turbo, which affect how much soot is made
What the repair usually is
- A forced regeneration, where we run the DPF's cleaning cycle in the shop
- Cleaning or replacing the DPF
- Replacing a failed exhaust sensor
- Flushing bad DEF and repairing the DEF heater, pump or sensor
- Cleaning or replacing the EGR valve or cooler
DPF, DEF and EGR repair across five Kansas counties
We look after drivers across Marion County, Harvey County, McPherson County, Chase County and Lyon County, with free pickup and delivery within 40 road miles of 611 Orchard Dr, Hillsboro.
DPF, DEF and EGR repair questions we hear every week
Can I just delete the DPF or EGR on my truck?
We will not do that, and we would steer you away from anyone who offers it. Removing or disabling emissions equipment is against federal law, and the fines can be large for both the owner and the shop. It can also cause problems when you sell the truck. We would rather repair the system properly so it stops giving you trouble.
What happens if my truck runs out of DEF?
The truck will warn you well in advance, then limit its speed until you refill it. That is by design and not a fault. Top it up with fresh DEF from a sealed container. If the warning stays on after refilling, the fluid may be contaminated or a heater or sensor may have failed, and that needs a diagnosis.
Why does my DPF keep clogging?
Most often it is the way the truck is driven. Short trips around town and long idles in the field never get the exhaust hot enough to burn off the soot. A leaking injector, a sticking EGR valve or a bad sensor can also cause it. We find out which, so you are not paying for the same cleaning over and over. Text us how the truck is used and we can usually tell you where to start.