Mobile Truck EGR and DPF Repair to Get You Out of Derate

Emissions faults present in a handful of similar ways, a warning light, a failed regen, a power loss, but the underlying causes are spread across several systems. We cover all of them on-site.

• Emissions Diagnostics and Fault Code Analysis: On-site scan-tool diagnosis of aftertreatment fault codes and live sensor data to identify whether the problem is a plugged filter, a sensor reporting incorrectly, a valve, or a DEF system fault before anything gets replaced.

• Forced and Parked Regeneration: Manual regen cycles performed at your location to burn accumulated soot out of the DPF, which in many derate situations restores power and gets the truck back in service the same visit.

• DPF Cleaning and Replacement: Assessment of filter condition and soot versus ash loading, with cleaning or replacement for filters too far gone to regenerate, since ash accumulation cannot be burned off the way soot can.

• EGR Valve Service: Cleaning and replacement of EGR valves stuck open or closed from carbon buildup, a common cause of rough running, power loss, black smoke, and recurring fault codes.

• EGR Cooler Repair and Replacement: Diagnosis and replacement of cracked or leaking EGR coolers, which can push coolant into the exhaust stream and mimic a head gasket failure with white smoke and unexplained coolant loss.

• DEF System Repair: Service for DEF pumps, injectors, heaters, quality and level sensors, and crystallized lines that trigger derate even when the rest of the aftertreatment is healthy.

• Sensor Diagnosis and Replacement: Testing and replacement of differential pressure sensors, NOx sensors, and exhaust temperature sensors that fail and report false conditions, sending the ECM into derate over a problem that does not exist.

• DOC and SCR Inspection: Evaluation of the diesel oxidation catalyst and selective catalytic reduction components for contamination, damage, and efficiency faults affecting the aftertreatment chain as a whole.