Peterbilt trucks are known for their durability and performance—but when a check engine light appears, you need a scanner that can deliver more than just a basic code. Whether you’re maintaining your own rig or servicing customer trucks, having the right diagnostic tool for Peterbilt is a game-changer.
What Should a Peterbilt Scanner Include?
✅ Full Engine & Aftertreatment Coverage
Peterbilts often run Cummins or Paccar MX engines, so your scanner must support DPF regens, DEF system resets, and full SPN/FMI fault code reads.
✅ Paccar ESA Compatibility
If you’re dealing with MX-13 or PX-9 engines, Paccar ESA software is required for dealer-level functions like injector coding, VGT control, and parameter changes.
✅ No Subscription Fees
Many scanners charge extra just to unlock features. Get one with lifetime access and no hidden costs.
✅ ABS, Transmission, and Body Control
Look for tools that read codes from ABS systems, transmissions (like Eaton), and cab modules—not just the ECM.
Best Peterbilt Diagnostic Tool for 2025
The most complete solution is a preloaded diesel laptop with:
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Paccar, Diesel Tech, and Universal Diag
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Support for Cummins, MX-13, CAT, and Detroit
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Includes Nexiq 3 adapter and full cable kit
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No subscriptions. No dealer visit needed.
Final Word
If you want to control regen cycles, read proprietary codes, and clear issues without a dealer, invest in a scanner designed specifically for Peterbilt trucks. It’ll pay for itself in your first avoided shop visit.