Diagnostics & Inspections
At D&D Fleet Engineering, we provide expert diagnostic and inspection services tailored to the needs of modern bus and coach operators. Our experienced engineers use advanced tools and trusted methods to find faults fast, carry out essential repairs, and ensure your vehicles are safe, compliant, and ready for the road.
High Voltage
Hybrid and electric vehicle systems require specialist skills and that’s exactly what we provide. As more fleets adopt alternative drivetrains, it’s vital to have engineers who understand the unique challenges of high-voltage fault finding and repairs.
Our team is fully trained to work safely on high-voltage systems, including hybrid and fully electric buses, using the latest diagnostic equipment to locate issues quickly and accurately. Whether it’s an intermittent fault, a battery-related issue, or a drivetrain malfunction, we get to the root of the problem and carry out safe, effective repairs.
All work is completed to industry safety standards and manufacturer guidelines, ensuring your vehicles stay compliant and your investment is protected.
Vehicle Diagnostic
Today’s fleet vehicles are more complex than ever, and when things go wrong, you need more than a code reader – you need skilled technicians with the right tools and experience. At D&D Fleet Engineering, we deliver comprehensive diagnostic services that get to the heart of the problem fast.
We use advanced diagnostic equipment to identify faults across a wide range of systems, including engine management, transmission controls, electrical wiring, CANbus communication, and emissions systems. We also provide support for ULEZ retrofit systems such as Excalibre and Proventia, helping operators stay compliant in low-emission zones.
Whatever the issue, we don’t just diagnose it, we fix it. You’ll get clear communication, professional repairs, and minimal disruption to your schedule.
Safety Inspections
Fleet safety is non-negotiable, and regular inspections are key to avoiding breakdowns, compliance issues, and unexpected repair costs. Our safety inspections are carried out to DVSA and operator standards, giving you peace of mind and full visibility over the condition of your fleet.
We offer routine safety checks, pre-MOT inspections, and defect reporting as part of scheduled maintenance plans or one-off assessments. Every inspection includes a full written report (digital or paper), clear recommendations, and, where needed, remedial repair work to get the vehicle back to a compliant state.
Whether you’re preparing for MOT, addressing defect reports, or simply staying ahead of wear and tear, our inspections help keep your fleet road-safe and legally compliant.