Modern diesel trucks rely on advanced aftertreatment systems to meet emissions regulations while maintaining engine performance and fuel efficiency. When one of these systems begins to fail, it can quickly lead to warning lights, reduced engine power, poor fuel economy, failed regenerations, or even an engine derate that takes your truck out of service. At FleetHub Services, we provide professional mobile aftertreatment diagnostics and repair to help keep your fleet running efficiently and minimize costly downtime.

Our OEM-trained technicians use professional diagnostic equipment to accurately identify the root cause of emissions system problems instead of simply replacing parts. Whether you’re dealing with recurring fault codes, regeneration issues, excessive DEF consumption, or sensor failures, we can diagnose the problem and recommend the most cost-effective repair solution.

We service a wide range of aftertreatment components, including:

• Diesel Particulate Filters (DPF)
• Diesel Oxidation Catalysts (DOC)
• Selective Catalytic Reduction (SCR) systems
• Diesel Exhaust Fluid (DEF) systems
• NOx sensors
• Exhaust temperature sensors
• Differential pressure sensors
• DEF injectors
• Emissions-related wiring and electrical components

Many aftertreatment problems develop gradually over time due to excessive idling, short trip cycles, poor maintenance, contaminated DEF fluid, or normal component wear. Catching these issues early can help prevent expensive repairs, unexpected breakdowns, and extended periods of downtime.

Because FleetHub Services is a mobile fleet maintenance provider, we come directly to your location whenever possible. This saves valuable time by eliminating the need to transport vehicles to a repair facility and allows your fleet to return to service faster. Our goal is to complete repairs efficiently while helping you avoid unnecessary interruptions to your daily operations.

Regular preventative maintenance also plays an important role in keeping your aftertreatment system operating properly. During scheduled maintenance visits, our technicians inspect the emissions system for signs of developing issues before they become major repairs. This proactive approach helps improve vehicle reliability, reduce repair costs, and extend the life of critical emissions components.

At FleetHub Services, we understand that every hour a truck is down affects your productivity and profitability. That’s why we focus on accurate diagnostics, quality workmanship, and dependable service that helps keep your fleet compliant, reliable, and ready for the road. Whether your truck is experiencing an active fault code, repeated regeneration failures, or a complete engine derate, our experienced technicians are prepared to diagnose the issue and get your vehicle back in service as quickly as possible.