This manual covers the Jaguar XK-Range, specifically the XK8 and XKR variants of the X150 generation, with a focus on the 2003 model year. These vehicles represent a pinnacle of Jaguar's grand tourer design, blending potent V8 performance with luxurious comfort and sophisticated styling. Available in both Coupe and Convertible body styles, the XK-Range features a robust aluminum chassis and a choice of naturally aspirated or supercharged 4.2-liter V8 engines, delivering exhilarating driving dynamics. The engineering quality and reliability of these vehicles are hallmarks of the Jaguar brand, known for its rich heritage of performance and elegance.

This diagnostic quick reference guide and DTC code book provides essential information for owners, independent repair shops, and automotive technicians. It focuses on Powertrain Diagnostic Trouble Codes (DTCs) for both V8 Naturally Aspirated (N/A) and V8 Supercharged (SC) engine variants, adhering to OBD II / OBD2 standards. The manual offers summaries of common DTCs, potential causes, and initial diagnostic steps, designed for quick lookups to facilitate faster fault identification. Its scope is to supplement more comprehensive service manuals by offering an accessible resource for troubleshooting issues related to the engine management system, transmission control, emissions, ignition, fuel systems, and more.