The Diesel Decoder turns your compatible iPhone, iPad, or Android device into a powerful mobile diagnostic tool for commercial trucks.
Built for owner-operators, drivers, small fleets, and technicians, the Diesel Decoder plugs into the vehicle diagnostic port, connects to the Diesel Decoder app by Bluetooth, and gives you access to heavy-duty diagnostic information without carrying a full-size diagnostic laptop.
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Read fault codes Access diagnostic trouble codes, including manufacturer-specific faults on supported vehicles. |
Clear fault codes Clear supported diagnostic trouble codes after repairs or troubleshooting. |
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View live data Monitor live vehicle and engine parameters directly from your compatible mobile device. |
Health reports Review vehicle information and diagnostic data in an easy-to-use mobile workflow. |
Many inexpensive truck scanners stop at generic SPN/FMI information. Diesel Decoder can provide deeper manufacturer-specific fault information on supported vehicles and gives you a direct path from the fault-code workflow into Diesel Repair.
From the fault-code workflow, tap once to continue into Diesel Repair and access repair information that can help you diagnose and fix the problem.
Knowing what is wrong is only the first step. Diesel Decoder Pro unlocks supported bi-directional commands that let you send commands back to the truck directly from your compatible phone or tablet.
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DPF REGENERATIONS Perform supported forced DPF regens on a wide range of Cummins, Detroit, International, PACCAR, Mack, Volvo, Hino, Isuzu, CAT and other applications. |
DERATE FUNCTIONS Perform supported aftertreatment derate resets and, on supported applications, commands such as Disable DEF Derate. |
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AFTERTREATMENT RESETS Reset supported aftertreatment systems after service, repair, or component replacement. |
DPF SERVICE COMMANDS Supported applications include DPF installation, replacement, ash/soot level resets, filter installation, and related service functions. |
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DEF & SCR FUNCTIONS Supported commands include DEF/SCR data resets, SCR resets, SCR tamper fault resets, and related aftertreatment functions. |
SENSOR & TEST COMMANDS Certain supported applications include NOx sensor resets, ash accumulator resets, and additional engine and aftertreatment test commands. |
Vehicle and command coverage varies by make, engine, model year, diagnostic connector, and function. Contact Diesel Laptops through eBay if you need to confirm a specific command for your vehicle before purchasing.
Diesel Decoder was designed around commercial trucks and supports major North American makes including Freightliner, Peterbilt, Kenworth, Mack, Volvo, Western Star, International, and many others.
| Diesel Decoder diagnostic tool |
| OBDII adapter |
| 1-year warranty |
Phone or tablet is not included. The Diesel Decoder does not use an internal battery. It is powered directly through the vehicle diagnostic port.
Diesel Laptops specializes in commercial truck diagnostics, repair information, diagnostic hardware, and technical support. The Diesel Decoder was built to give drivers and fleets a faster path from a warning light to useful diagnostic information and the next repair step.