CAT ET 2021C [Caterpillar Electronic Technician]


Cat ET 2021C (Caterpillar Electronic Technician) is a diagnostic software used by Caterpillar engineers and technicians to communicate, diagnose and maintain Caterpillar engines / machines equipped with ECU electric control system. We can diagnose current or potential problems, engine information, and current data all analyzed using this software.

With specialized software from Cat ET 2021, you can customize all the parameter you want, even programming and update software ECU control.



Are you looking for specialized diagnostic software for Caterpillar.

You want to perform the features of read and clear trouble codes , data list, edit engine parameters or more advanced features programming the ECM.

If you have a need, please contact to own the specialized software Cat ET 2021C!

1. Software Information

  • Name: Cat ET (Caterpillar Electronic Technician)
  • Version: 2021C
  • Capacity: 525 MB
  • Tools: Factory Password
  • Type: Diagnostic Software

1.1. Supported Model

All Caterpillar Engine Model:

  • Articulated Trucks.
  • Backhoe loaders.
  • Forest products.
  • Mining Equipment.
  • Motor Graders.
  • Off-Highway trucks.
  • Paving Products.
  • Skid Steer loaders.
  • Track Loaders.
  • Track Type Tractors.
  • Wheel Dozers.
  • Wheel Loaders.
  • Engines & Power System.

Cat ET 2021C Software

2. Softwrae Faetures

  • Read & Clear Diagnostic Trouble Codes (DTCs)
  • Data List
  • Graphical Monitoring
  • Engine Diagnocstic Tests (Injector Cut- Out, EGR Valv, Turbo…)
  • Parameter Vehicel Adjustment
  • Displays the current configuration of an ECM.
  • Change the ECM settings.
  • Perform the calibrations.
  • Print reports and diagnostic results.
  • Please note that some ECM settings, such as the speed limit, require a Factory password

2.1. What’s New on CAT ET 2021C

→ Feature Protection System Password Copy

The Feature Protection System (FPS) has a new “Easy Copy” link to copy passwords in a single operation. The service tool can automatically obtain the passwords from the clipboard and populate the FPS dialog. The service tool dialog also has a new “Easy Paste” button that allows the user to paste data of the correct format from the clipboard. Passwords can still be pasted using customary copy/paste operations, such as the context menu or the CTRL + V hotkey combination.

→ Screen Resolution Requirement Update

The minimum requirement for screen resolution has been updated to 1366×768, or at least 1366 pixels horizontally and at least 768 pixels vertically. The recommended screen resolution is at least 1600×1200. The service tool window displays with a minimum size of 1024×680.

Cat ET 2021C Programing

2.2. Computer Requirements

  • OS: Windows 7, Windows 8.1, Windows 10, Windows 11
  • Free hard drive space: 5 GB or more
  • CPU: Core i3 or above
  • Ram: 4GB or more

2.3. Supported Hardware

  • Cat ET Datalink Adapter III
  • Nexiq USB link 1, 2
  • DG Technology DPA5
  • And some other RP1210 devices

3. Why do you need to use Cat ET?

Today, the electronic control system on the truck is increasingly modern and complex, you cannot only repair with experience, you need the support of tools and equipment, one of which is a diagnostic tools so that the problem can be identified more easily and quickly.

Currently on the market, there are many types of diagnostic tools that can support this. However, in terms of support features, it will not equal to Caterpillar specialized software. Indeed, the software of these diagnostic tools based on Cat ET 2021C software. That is why you should use the software Cat ET to help maximize the functionality on these Caterpillar lines.

 4. Who should use this software?

  • Technicians and repairman specialize in Caterpillar.
  • Engineer Caterpillar  
  • Caterpillar engine software in-depth researcher

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