Heavy Duty Truck Code Scanner with Extensive Caterpillar Coverage and Generic OBDII Read/clear codes . DPF resets and regeneration. Capture screenshots . View/graph live data. Class 4-8 HD truck coverage for J1587, J1708 & J1939 protocols. Access engine, transmission & brakes. Automatic protocol search. Added capabilities for Caterpillar, International, Hino, Isuzu & Hybrid HD Trucks. Vehicle information. Code look-up. Comfortable ergonomic design. Easy to read large screen. Easy to operate push button design. Easy updates via web HDCODEII