Diesel Explorer is a free Windows tool from Diesel Laptops that connects through RP1210-compliant adapters to read and clear fault codes on heavy-duty trucks. It’s ideal for fast DTC checks, health reports, and basic data without paid subscriptions.



Highlights

• FREE core features: read & clear fault codes, view active/inactive DTCs, create/share vehicle health reports.
• Adapter-agnostic: works with most RP1210 interfaces (Nexiq USB-Link, DG Tech DPA5, Cummins INLINE, TEXA TXT Multihub, etc.).
• Protocol coverage: J1939, J1708/J1587, UDS, and OBD-II on supported makes.
• Clean workflow: one-click Connect, auto-populate vehicle fields (VIN, Make, Model, Serial) where available, print/export reports.

Package contents

• DieselExplorerSetup.exe (current series 2.2.x)

Basic usage

• Install the setup package and launch Diesel Explorer.
• Connect an RP1210-compatible interface to the PC and vehicle.
• Click Connect ➜ read active/inactive DTCs.
• Use Clear DTCs to erase faults after repairs; print or save the health report if needed.

Operating systems
Windows 10, Windows 11.

Minimum system requirements

• OS: Windows 10 or newer (x64 recommended)
• Interface: RP1210-compliant adapter (USB/BT as supported by your interface)
• Ports: 9-pin/16-pin vehicle connector via the adapter
• Internet: Optional (for updates and report sharing)

Compatibility notes

• RP1210 requirement means broad adapter support across brands; choose the correct vehicle connector for J1939/J1708/OBD-II.
• Feature set shown here reflects the FREE/BASIC tier focused on DTC read/clear and reports.

Disclaimer
Source files and installers shared here are for service and training use. Respect local laws and OEM licensing. Always back up data before clearing codes.

---