Diesel Decoder

Connect to Make Informed Decisions

Designed for heavy-duty owner-operators and small fleets, the Diesel Decoder is an all-in-one diagnostic tool that uses your smartphone to view fault codes and get repair information. No expensive code-scanning hardware or software needed. Equip your maintenance staff and drivers with tools and software to stay on top of engine and maintenance issues. Diesel Decoder Mobile Diagnostic Tool with DPF Regens for Apple & Android. Pays for itself in one saved tow or dealer diagnostic visit!

Try the Diesel Decoder Today!

  • Apple & Android Smartphone Compatible
  • View Fault Codes
  • Understand Urgency of Repair
  • Determine Who to Take Truck to
  • Make Informed Decisions
  • Read DTCs and Access Instant Repair Help
  • Now Does DPF Regens

Maximize Uptime

This powerful and affordable tool plugs into any HD truck diagnostic port to deliver real-time data for all major heavy-duty truck makes in North America, including Freightliner, Peterbilt, Mack, Kenworth, Volvo, Western Star, International and many others.

All Makes and Models

Your rig has thrown a fault code. Do you call for repair help? Or keep driving? The Diesel Decoder removes the mystery to help you decide to simply clear the codes and keep rolling, or if and when a repair is needed. Maximize your heavy-duty truck uptime by quickly and reliably detecting all true diagnostic trouble codes and manufacturer-specific fault codes.

High Power, Low Price


Turn your smartphone into a user-friendly HD diagnostic tool. Just download and sync via Bluetooth the free Diesel Decoder smartphone app to view a wide range of vital diagnostic and trip data - at a fraction of the cost of other diagnostic tools. New features and upgrades are delivered directly to the app, eliminating the need for cumbersome update procedures and the cost of replacing expensive diagnostic gear.

Instant Repair Help

For owner-operators and managers of commercial fleets, truck maintenance and repair costs are a fact of life. Diesel Decoder can help manage the costs more efficiently. Using the free app, you can seamlessly connect to the Diesel Laptops® comprehensive Diesel Repair Platform digital library to diagnose fault codes and explore your repair and maintenance options.

Connect for $350

Toll-Free: 1-866-668-4738
Local: (949) 627-4644
Fax: (951) 848-0713