Noregon JPRO Commercial Fleet Products are PC- and adapter-based, in-shop, diagnostic solutions used in the repair and maintenance of on-highway vehicles, both heavy- and medium-duty. Technicians plug a JPRO adapter into the vehicle’s diagnostic port to read fault codes from engine, transmission, braking-system, body, and chassis controllers. JPRO software has more than 28,000 OEM fault codes, says Noregon, and the system can be used with off-highway equipment if a supported component is involved, such as a Cummins or Cat engine.