• Diesel Decoder Mobile Diagnostic Tool with DPF Regens for Apple & Android

    Diesel Decoder Mobile Diagnostic Tool with DPF Regens for Apple & Android

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    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!

    Turn Your Smartphone Into a Heavy Duty Diagnostic Tool

    See how the Diesel Decoder can help you make the most of every mile

    Diesel Decoder Application

    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.

    Diesel Decoder Application

    Total Vehicle Data

    Use vital trip distance, engine operating hours and more to help plan maintenance intervals.

    Driver Productivity and Trip Reports

    View instant and average fuel economy, hard braking events and more, and generate trip reports that can be viewed, printed and shared.

    Get The Free Diesel Decoder App Today!

    Now available for download


    Decoder Bi-DC

    Bi-Directional Commands

    With bi-directional testing, both scan tools and service software have the capability to send test commands to the truck via service tool software. To view the full list of bi-directional commands that the Diesel Decoder can handle, click the link below.

    *Bi-Directional Commands are a beta feature and are free for a limited time only.

    See Bi-Directional Commands

    • Volvo DPF Ash and Soot Level Resets (All engines 2013+)
    • Cummins Aftertreatment Maintenance Filter Install (2007+)
    • Cummins Aftertreatment Reset (2007+)
    • Detroit DPF Ash Accumulator Reset (2010-2021)
    Decoder App Update

    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.

    *DPF Regens are a beta feature and are free for a limited time only.

    See All Makes / Models

    • Caterillar (CAT)
      • CT11/13 (2010 - 2013)
    • Cummins
      • ISB6.7 & B6.7 (2007 - Current)
      • ISC & ISC8.3 (2007 - Current)
      • ISL9 (All Years)
      • ISM (All Years)
      • ISX11.9 & ISX12 (All Years)
      • ISX15 (All Years)
      • X12 (All Years)
      • X15 (All Years)
      • Does not cover RAM Trucks
    • Detroit Diesel
      • DD5, DD8, DD13, DD15, & DD16 (2008+)
    • Hino
      • J08E (2013-Current)
    • International
      • DT/9/10 (2007+)
      • Maxxforce 7 (2007+)
      • Maxxforce 7 KOER (2007 - Current)
      • MaxxForce 11 & 13 (All years)
      • Maxxforce DT/9/10 KOER (2007 - Current)
      • A26 (2017-Current)
      • N13 (2013-2016)
    • Isuzu
      • 4HK1 (2014 - 2019)
    • Mack
      • MP7 & MP8 (2013 - Current)
    • Paccar
      • MX11/13 (2010-Current)
      • PX (2007- Current)
    • Volvo
      • D11 & D13 (2013 - Current)


    The Diesel Decoder is available through various partner companies.
    Dorman Products: Part # 904-SCAN
    1-800-523-2492, Dorman Diesel Decoder
    IDS: Part # TRX-Link
    310-530-1900, TruckRx
    RoadWarrior: Part # DECODER-DL-01
    1-877-897-9759, RoadWarrior Diesel Decoder
    TruckSuite: Part # TS-DD 0122-1000
    1-855-257-7500, TruckSuite Site

    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.

    Fault Code Info - 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, eleminating 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 Platfrom digital library to diagnose fault codes and explore your repair and maintenance options.

    Frequently Asked Questions

    See what questions other customers are asking.

    See FAQs

    Is this device Apple MFI Certified? No, it is not. This is an optional certification program for Apple that lets you integrate with certain Apple platforms and services such as CarPlay, Find My, AirPlay, HomeKit, and others. Our device uses standard Bluetooth technology, which is exempt from the Apple MFI program.

    Summer 2023 Updates:

    • Cummins OE codes for (2018 - Current)
    • Clear Cummins OE codes
    • Paccar P-Codes
    • Added Volvo DPF Ash and Soot Level Resets (All engines 2013+)
    • Added Cummins Aftertreatment Maintenance Filter Install (2007+)
    • Add Cummins Aftertreatment Reset (2007+)
    • Added Detroit DPF Ash Accumulator Reset (2010-2021)
    • Added Maxxforce 7 KOER Standard tests and Regen (2007+)
    • Added International Maxxforce DT/9/10 KOER Standard Test & Regen (2007+)
    • Added CAT CT11/13 regen (2010-2013)
    • Various bug fixes
    • Speed improvements inside the app
    • Design changes to make operation easier
    Contact Us


    If you have any questions about this or any other product, please don't hesitate to contact one of our Diesel Laptops experts at (888) 983-1975 or by clicking below!

    Contact Us

    Customer Reviews

    Based on 15 reviews
    Myatt Volentine
    Good tool to have

    Works very well nice to have in the truck for if you get a code

    Robert Brock
    Great product

    Product works as intended. Regens all my dd13 and dd15 western stars. Wish I could see and codes tho. Great product easy to setup and use.

    David Jenkins
    Nice instrument

    Reasonably easy to install , could be a little difficult for those that use an ELT 9 pin hook up also , as it would require a spitter cable . All in all ,I think it has a useful place for the over the road trucker .Along with a fast easy twist for the mechanic to get a quick read .

    William Goodwin

    Diesel Decoder Mobile Diagnostic Tool with DPF Regens for Apple & Android

    Vuk Roganovic
    Worth of trying definitely 👌

    I have Freightliner m2 series 2021, with Detroit DD8 engine, long story short clear codes and you can do forced regen. Well done guys, and I'm glad that I bought this little thing.