The tool only has 8 pins. Will it still work on my 9-Pin diagnostic port?

The OTR Diagnostics Pro hardware is designed to function with all the engines we are compatible with. As long as your engine is covered, the tool will function as intended to read and reset fault codes, view live data, perform bi-directional commands, and more!

Engine coverage:

2008+ Cummins

2008+ Detroit Diesel

2011+ Paccar MX

2014+ Volvo

2014+ Mack

For a more comprehensive list, please visit here.

Jun 2, 2025

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