FOXWELL Heavy Duty Truck Scanner HD301 — Full-System Diesel Scan Tool with 6/9/16‑Pin Adapters, No Subscription

The FOXWELL HD301 is a plug-and-play heavy-duty diesel scanner that reads and clears codes, accesses full truck systems, and supports 6-, 9- and 16-pin connectors for broad commercial vehicle coverage.

The HD301 is built for fleets, owner-operators and diesel technicians who need a rugged, easy-to-use diagnostic tool without subscriptions or smartphone apps. It merges an advanced OBDII reader with heavy-duty truck protocols so you can retrieve live sensor data, read DTC definitions on-device, and pinpoint issues across engine, transmission, ABS and other modules.

How does the HD301 connect to different truck and engine types?

The unit includes an integrated 16-pin OBDII connector plus professional-grade 6-pin and 9-pin adapters to reach older and newer commercial vehicles. It supports J1939, J1708, J1587 and standard OBDII protocols, providing compatibility with many makes and diesel engines.

• Built-in 16-pin OBDII connector for modern vehicles
• Included 6-pin and 9-pin adapters for legacy trucks
• Protocol support: J1939, J1708, J1587 and OBDII
• Works with Freightliner, Kenworth, Peterbilt, International, Mack
• Engine coverage: Cummins, PACCAR, Detroit Diesel, Caterpillar

What diagnostic functions can I perform with this scanner?

The HD301 performs full-system scanning across available electronic control modules so you can identify faults beyond just the engine. It reads and erases trouble codes, displays live sensor data in readable text, and stores a built-in DTC lookup library so fault meanings are available on the device.

• Read and erase diagnostic trouble codes (DTCs)
• On-device DTC definitions—no internet needed
• Live sensor streams: coolant temp, fuel pressure, RPM, and more
• Scans Engine, Transmission, ABS, SRS, Chassis and Body Control
• Note: does not support DPF regeneration procedures

Is the HD301 easy to use in the workshop and on the road?

Yes — the HD301 is designed for plug-and-play operation without Wi-Fi, apps, or batteries. Just plug the tool into the vehicle diagnostic port to begin scanning, and receive lifetime free software updates to stay current with new models and protocols.

• No subscription, no app setup, no external power needed
• Rugged handheld design for shop or roadside use
• Supports English and Spanish interface options
• Lifetime firmware updates included at no extra cost

Which vehicle types and industries can benefit from the HD301?

The scanner is optimized for heavy-duty trucks but also covers pickups, buses, trailers, construction and agricultural equipment, and many marine installations. It’s a versatile tool for any heavy equipment environment where electronic diagnostics are required.

• Commercial tractors, semis and vocational trucks
• Pickup trucks and fleet service vehicles
• Construction machinery and agricultural implements
• Buses, trailers and select marine diesel applications

Who is this for? The FOXWELL HD301 suits professional diesel technicians, fleet managers, and owner-operators who want comprehensive diagnostic access without recurring fees. It’s especially useful when you need quick, reliable fault identification across multiple vehicle protocols—reducing downtime and avoiding unnecessary shop visits while giving you clear, on-device fault definitions and live data for faster troubleshooting.