Diesel Decoder

Diesel Decoder Mobile Diagnostic Tool with DPF Regens for Apple & Android. Pays for itself in one saved tow or dealer diagnostic visit!

Designed for heavy-duty truck owner-operators and small commercial fleets, the Diesel Decoder is a powerful one-of-a-kind diagnostic tool for all heavy-duty truck makes.

Just plug it into a diagnostic port, sync it via Bluetooth® to the free Diesel Decoder by Diesel Laptops® app, and use your smartphone to view fault codes and get repair information. No expensive code-scanning hardware and software needed!

Now Does DPF Regens!

The Diesel Decoder is now updated to do DPF regens! To access these features, make sure you update your Diesel Decoder app to the latest version on the app store you use.

Turn Your Smartphone Into a Heavy Duty Diagnostic Tool

• Read DTCs and Access Instant Repair Help - Detects all true fault codes and provides instant access to the Diesel Laptops® repair library.
• VIN Information - Detects and stores comprehensive truck specifications.
• Total Vehicle Data - Use vital trip distance, engine operating hours and more to help plan maintenance intervals.
• Total Vehicle Data - Use vital trip distance, engine operating hours and more to help plan maintenance intervals.

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.