Category: Info & Options

Finding the ECM Version for Cummins Engines

One way to determine the ECM version on a Cummins engine is by locating your engine serial number (ESN), then creating a free account on Cummins QuickServe. QuickServe will also provide a wealth of other information for your specific engine. To locate your engine serial number you can poke around under your engine and look for the stamped tag with this info, but an easier way is to find the DOT placards for your rig.Learn More

DSS connector plug for Freightliner chassis (XCM)

Credits: The following content was provided by NMBluept Disclaimer: please use at your own risk, practice due diligence and verify that the information provided applies to and is compatible with your specific equipment and double check your work.   DSS connector plug for Freightliner chassis (XCM) Note for DSS builders: the DT-4 connector used in the instructions for the DSS is not compatible with Freightliner chassis (at least with the XCM chassis). If your DEFLearn More


Windows Defender – if you try to download the DEF Simulator software and you get a message saying “this file could harm your device” the video below shows the steps to download it anyway. This file will NOT harm your device, it is just unknown to Microsoft at this time.


I already have a Raspberry Pi with a CAN interface, can I use that? Not right now, only the Arduino hardware specified is currently supported. There are no immediate plans to port to the RPi, however we may pursue that option when time permits. Will this work on my PowerStroke – Duramax – Dodge Cummins Truck? The short answer is NO! The 1.5, 1 and 3/4 ton Pick-Up trucks all use DEF. However the ECMLearn More

Cummins Engine Lamp Identification Guide

Cummins Engine Compatibility

IMPORTANT INFORMATION BEFORE YOU BEGIN Check your ECM The Simulator has only been tested and shown to work on a handful of Cummins engines using Cummins CM2350 ECMs. Before you begin building your own Simulator we recommend that you ascertain what model ECM you have. As a general guideline the Simulator should work on all Cummins engines designated as EPA 13 and/or EPA 17. We believe that includes all engines produced since 2016. (Note: editedLearn More

LCD Add-on for the Arduino DUE (Original Build)

Adding a LCD module to your DEF Simulator is a fun extra project for the slightly more techie people.  The current Simulator code already has support for the LCD module included.  The module can display the initialization status, simulated tank level and simulated DEF temperature. The LCD module uses different digital I/O pins on the Arduino DUE vs the UNO/ATMega2560. The module can be built on simple perforated board or you can buy a bareLearn More

Windows Defender

Windows Defender and Software Installation: Windows Defender is found on many Windows 10 computers along with other 3RD party anti-virus software.  When running “DEF Emulator Install Files (x32).exe” to install the Arduino programming files, Windows Defender (or other anti-virus program) will probably “complain”.   This is because the .exe program is an unrecognized .application.  Do not be alarmed. Windows Defender will show: Click on “More info” to continue the install process.  Another window will open askingLearn More

Fault Codes Explained

A modern diesel engine is a very complex device. Over the many years that they have been used there have been steady increases in power, reductions in fuel usage and significant reductions in harmful pollutants. Some claim the exhaust of a modern diesel engine can actually be cleaner than the air going into it! These improvements have required more and more sophisticated control systems. At the heart of the Cummins engines is the Electronic ControlLearn More

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