Engine Diagnostics

 At RDP, we bring a hard-hitting, no-BS attitude to big rig diesel engine diagnostics—because when your semi truck is down, you’re not making money. We specialize in heavy-duty diesel diagnostics for Class 8 trucks, commercial fleets, and over-the-road rigs, using advanced diagnostic software, OEM-level scan tools, ECM fault code analysis, and real-time engine data monitoring to identify problems quickly and accurately. From DPF filter issues, EGR system failures, and SCR/emissions faults to turbocharger problems, fuel system inefficiencies, and electrical diagnostics, our team knows how to break down complex diesel engine issues and get straight to the root cause. Whether you're dealing with a check engine light, derate conditions, loss of power under load, poor fuel economy, or aftertreatment system failures, RDP delivers precise semi truck diagnostics and dependable repair solutions that minimize downtime and keep your rig moving. Our diesel engine diagnostic services are built for owner-operators and fleet managers who demand performance, reliability, and fast turnaround times. When it comes to big rig diesel troubleshooting, preventative maintenance diagnostics, and engine performance optimization, RDP sets the standard for professional, high-performance diesel service that keeps your truck—and your business—on the road.