AI-Powered Heavy Duty DiagnosticsBuilt by a 16-Year Diesel Veteran
61 real fleet diagnostic cases. Covers Cummins, Detroit, PACCAR.
Free AI assistant for independent repair shops.
Real-World Diagnostic Cases
Kenworth T680 DPF Regen Failure
Intermittent active regen abort at 68%. Root cause: cracked DOC inlet temp sensor wiring harness — not the DPF itself. Saved $4,200 in unnecessary parts.
Freightliner Cascadia Aftertreatment Derate
5 MPH derate with SPN 4364 / FMI 18. DEF quality sensor passed bench test but failed under thermal cycling. Pattern affects 2018-2021 DD15 engines.
Peterbilt 579 Cummins X15 No-Start
Cranks but no start after ECM reflash. Fuel rail pressure stuck at 2,800 PSI. Found corroded ground stud G103 behind cab — common post-reflash miss.
International LT625 Transmission Fault
Stuck in 4th gear, Eaton Fuller automated. J1939 SPN 524 showing erratic output shaft speed. Damaged tone ring teeth from previous driveline work.
Mack Anthem MP8 High Crankcase Pressure
CCV system fault with oil consumption >1 qt per 1,000 mi. Turbo oil seal intact — actual cause was worn valve stem seals on cylinders 3 and 5.
Get Early Access
Join 50+ shops testing AI diagnostics for heavy duty trucks.
Why Choose Us
Premium Quality
Industry-leading diagnostic equipment
Expert Support
24/7 technical assistance
Extended Warranty
Comprehensive coverage for peace of mind