If you work on Freightliner trucks, having the right diagnostic scanner saves time, money, and frustration. Freightliner is one of the most common truck brands on the road, and getting full access to codes and functions requires more than just a basic code reader.
What to Look for in a Freightliner Scanner
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OEM-Level Access – Freightliner trucks use Detroit Diesel engines and systems. A good scanner should support Detroit
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Full Coverage for Engine, Transmission, ABS – Look for a scanner that supports Cummins, Detroit, CAT, and Eaton if you’re working on mixed fleets.
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DPF Regens & Resets – You’ll want to perform forced regens, reset SCR faults, and manage aftertreatment without visiting a dealer.
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Preloaded & Ready to Use – The best scanners come pre-configured with all the necessary programs, no subscriptions or setup required.
Best Freightliner Scanner for 2025
The top option is a diesel laptop diagnostic kit with Detroit Diagnostic Link pre-installed, plus universal tools like Diesel Tech and Universal Diag. These work with Nexiq 3 adapters and cover Freightliner Cascadia, M2, Columbia, and other models up to 2026.